diff --git a/src/Forms/CompositeValidator.php b/src/Forms/CompositeValidator.php
index cc4c508c1a7..e18190676e8 100644
--- a/src/Forms/CompositeValidator.php
+++ b/src/Forms/CompositeValidator.php
@@ -19,7 +19,7 @@
  * {
  *   $compositeValidator = parent::getCMSCompositeValidator();
  *
- *   $compositeValidator->addValidator(RequiredFields::create(['MyRequiredField']));
+ *   $compositeValidator->addValidator(RequiredFieldsValidator::create(['MyRequiredField']));
  *
  *   return $compositeValidator
  * }
@@ -28,7 +28,7 @@
  *
  * protected function updateCMSCompositeValidator(CompositeValidator $compositeValidator): void
  * {
- *   $compositeValidator->addValidator(RequiredFields::create(['AdditionalContent']));
+ *   $compositeValidator->addValidator(RequiredFieldsValidator::create(['AdditionalContent']));
  * }
  */
 class CompositeValidator extends Validator
@@ -100,7 +100,7 @@ public function validate()
     }
 
     /**
-     * Note: The existing implementations for the php() method (@see RequiredFields) does not check whether the
+     * Note: The existing implementations for the php() method (@see RequiredFieldsValidator) does not check whether the
      * Validator is enabled or not, and it also does not reset the validation result - so, neither does this.
      *
      * @param array $data
@@ -150,7 +150,7 @@ public function getValidators(): array
     }
 
     /**
-     * Return all Validators that match a certain class name. EG: RequiredFields::class
+     * Return all Validators that match a certain class name. EG: RequiredFieldsValidator::class
      *
      * The keys for the return array match the keys in the unfiltered array. You cannot assume the keys will be
      * sequential or that the first key will be ZERO.
@@ -175,7 +175,7 @@ public function getValidatorsByType(string $className): array
     }
 
     /**
-     * Remove all Validators that match a certain class name. EG: RequiredFields::class
+     * Remove all Validators that match a certain class name. EG: RequiredFieldsValidator::class
      *
      * @param string $className
      * @return CompositeValidator
diff --git a/src/Forms/FileField.php b/src/Forms/FileField.php
index a4db0fba7c3..fdeed0a59d7 100644
--- a/src/Forms/FileField.php
+++ b/src/Forms/FileField.php
@@ -33,7 +33,7 @@
  *      $actions = new FieldList(
  *          new FormAction('doUpload', 'Upload file')
  *      );
- *      $validator = new RequiredFields(['MyName', 'MyFile']);
+ *      $validator = new RequiredFieldsValidator(['MyName', 'MyFile']);
  *
  *      return new Form($this, 'Form', $fields, $actions, $validator);
  *  }
diff --git a/src/Forms/Form.php b/src/Forms/Form.php
index a0483b68cc6..58a1a2f1796 100644
--- a/src/Forms/Form.php
+++ b/src/Forms/Form.php
@@ -44,7 +44,7 @@
  * Each form needs some form of {@link Validator} to trigger the {@link FormField->validate()} methods for each field.
  * You can't disable validator for security reasons, because crucial behaviour like extension checks for file uploads
  * depend on it.
- * The default validator is an instance of {@link RequiredFields}.
+ * The default validator is an instance of {@link RequiredFieldsValidator}.
  * If you want to enforce serverside-validation to be ignored for a specific {@link FormField},
  * you need to subclass it.
  *
@@ -274,7 +274,7 @@ class Form extends ModelData implements HasRequestHandler
      * @param FieldList $fields All of the fields in the form - a {@link FieldList} of {@link FormField} objects.
      * @param FieldList $actions All of the action buttons in the form - a {@link FieldLis} of
      *                           {@link FormAction} objects
-     * @param Validator|null $validator Override the default validator instance (Default: {@link RequiredFields})
+     * @param Validator|null $validator Override the default validator instance (Default: {@link RequiredFieldsValidator})
      */
     public function __construct(
         RequestHandler $controller = null,
@@ -297,7 +297,7 @@ public function __construct(
         $this->setName($name);
 
         // Form validation
-        $this->validator = ($validator) ? $validator : new RequiredFields();
+        $this->validator = ($validator) ? $validator : new RequiredFieldsValidator();
         $this->validator->setForm($this);
 
         // Form error controls
diff --git a/src/Forms/FieldsValidator.php b/src/Forms/FormFieldsValidator.php
similarity index 90%
rename from src/Forms/FieldsValidator.php
rename to src/Forms/FormFieldsValidator.php
index 504cf6157f8..b3db2019a18 100644
--- a/src/Forms/FieldsValidator.php
+++ b/src/Forms/FormFieldsValidator.php
@@ -5,7 +5,7 @@
 /**
  * Validates the internal state of all fields in the form.
  */
-class FieldsValidator extends Validator
+class FormFieldsValidator extends Validator
 {
     public function php($data): bool
     {
diff --git a/src/Forms/GridField/GridFieldDetailForm.php b/src/Forms/GridField/GridFieldDetailForm.php
index 544f6221f3c..ae571c46747 100644
--- a/src/Forms/GridField/GridFieldDetailForm.php
+++ b/src/Forms/GridField/GridFieldDetailForm.php
@@ -14,7 +14,7 @@
 use SilverStripe\Core\Extensible;
 use SilverStripe\Core\Injector\Injector;
 use SilverStripe\Forms\FieldList;
-use SilverStripe\Forms\FieldsValidator;
+use SilverStripe\Forms\FormFieldsValidator;
 use SilverStripe\Forms\Validator;
 use SilverStripe\ORM\DataList;
 use SilverStripe\ORM\DataObject;
@@ -148,7 +148,7 @@ public function handleItem($gridField, $request)
             if ($record->hasMethod('getCMSCompositeValidator')) {
                 $validator = $record->getCMSCompositeValidator();
             } else {
-                $validator = FieldsValidator::create();
+                $validator = FormFieldsValidator::create();
             }
             $this->setValidator($validator);
         }
diff --git a/src/Forms/HasOneRelationFieldInterface.php b/src/Forms/HasOneRelationFieldInterface.php
index b520cc9592a..e02451faf7c 100644
--- a/src/Forms/HasOneRelationFieldInterface.php
+++ b/src/Forms/HasOneRelationFieldInterface.php
@@ -4,7 +4,7 @@
 
 /**
  * Added to form fields whose values are the ID of a has_one relation
- * This is used in RequiredFields validation to check if the value is set
+ * This is used in RequiredFieldsValidator validation to check if the value is set
  */
 interface HasOneRelationFieldInterface
 {
diff --git a/src/Forms/RequiredFields.php b/src/Forms/RequiredFields.php
index 6e2068aba82..d942bd6d0cf 100644
--- a/src/Forms/RequiredFields.php
+++ b/src/Forms/RequiredFields.php
@@ -12,7 +12,7 @@
  * Validation is performed on a field by field basis through
  * {@link FormField::validate}.
  */
-class RequiredFields extends Validator
+class RequiredFieldsValidator extends Validator
 {
 
     /**
@@ -193,7 +193,7 @@ public function removeRequiredField($field)
     /**
      * Add {@link RequiredField} objects together
      *
-     * @param RequiredFields $requiredFields
+     * @param RequiredFieldsValidator $requiredFields
      * @return $this
      */
     public function appendRequiredFields($requiredFields)
diff --git a/src/Forms/Validator.php b/src/Forms/Validator.php
index 786931ea87c..4a068a8272a 100644
--- a/src/Forms/Validator.php
+++ b/src/Forms/Validator.php
@@ -171,7 +171,7 @@ public function removeValidation()
     /**
      * When Validators are set on the form, it can affect whether or not the form cannot be cached.
      *
-     * @see RequiredFields for an example of when you might be able to cache your form.
+     * @see RequiredFieldsValidator for an example of when you might be able to cache your form.
      *
      * @return bool
      */
diff --git a/src/ORM/DataObject.php b/src/ORM/DataObject.php
index 586db64a941..a0b30db60d0 100644
--- a/src/ORM/DataObject.php
+++ b/src/ORM/DataObject.php
@@ -19,7 +19,7 @@
 use SilverStripe\Forms\FormField;
 use SilverStripe\Forms\FormScaffolder;
 use SilverStripe\Forms\CompositeValidator;
-use SilverStripe\Forms\FieldsValidator;
+use SilverStripe\Forms\FormFieldsValidator;
 use SilverStripe\Forms\GridField\GridField;
 use SilverStripe\Forms\GridField\GridFieldConfig_RelationEditor;
 use SilverStripe\Forms\HiddenField;
@@ -2686,7 +2686,7 @@ public function getCMSActions()
      */
     public function getCMSCompositeValidator(): CompositeValidator
     {
-        $compositeValidator = CompositeValidator::create([FieldsValidator::create()]);
+        $compositeValidator = CompositeValidator::create([FormFieldsValidator::create()]);
 
         // Support for the old method during the deprecation period
         if ($this->hasMethod('getCMSValidator')) {
diff --git a/src/Security/Group.php b/src/Security/Group.php
index 6c10d32c073..47461b45232 100755
--- a/src/Security/Group.php
+++ b/src/Security/Group.php
@@ -23,7 +23,7 @@
 use SilverStripe\Forms\HTMLEditor\HTMLEditorConfig;
 use SilverStripe\Forms\ListboxField;
 use SilverStripe\Forms\LiteralField;
-use SilverStripe\Forms\RequiredFields;
+use SilverStripe\Forms\RequiredFieldsValidator;
 use SilverStripe\Forms\Tab;
 use SilverStripe\Forms\TabSet;
 use SilverStripe\Forms\TextareaField;
@@ -559,7 +559,7 @@ public function getCMSCompositeValidator(): CompositeValidator
     {
         $validator = parent::getCMSCompositeValidator();
 
-        $validator->addValidator(RequiredFields::create([
+        $validator->addValidator(RequiredFieldsValidator::create([
             'Title'
         ]));
 
diff --git a/src/Security/Member.php b/src/Security/Member.php
index 4f139a9b8d0..06667176604 100644
--- a/src/Security/Member.php
+++ b/src/Security/Member.php
@@ -682,7 +682,7 @@ public function getMemberPasswordField()
 
 
     /**
-     * Returns the {@link RequiredFields} instance for the Member object. This
+     * Returns the {@link RequiredFieldsValidator} instance for the Member object. This
      * Validator is used when saving a {@link CMSProfileController} or added to
      * any form responsible for saving a users data.
      *
diff --git a/src/Security/MemberAuthenticator/MemberLoginForm.php b/src/Security/MemberAuthenticator/MemberLoginForm.php
index c88df53dc87..b4bb4ece77f 100644
--- a/src/Security/MemberAuthenticator/MemberLoginForm.php
+++ b/src/Security/MemberAuthenticator/MemberLoginForm.php
@@ -10,7 +10,7 @@
 use SilverStripe\Forms\HiddenField;
 use SilverStripe\Forms\LiteralField;
 use SilverStripe\Forms\PasswordField;
-use SilverStripe\Forms\RequiredFields;
+use SilverStripe\Forms\RequiredFieldsValidator;
 use SilverStripe\Forms\TextField;
 use SilverStripe\Core\Validation\ValidationResult;
 use SilverStripe\Security\LoginForm as BaseLoginForm;
@@ -111,7 +111,7 @@ public function __construct(
         if (isset($logoutAction)) {
             $this->setFormAction($logoutAction);
         }
-        $this->setValidator(RequiredFields::create(static::config()->get('required_fields')));
+        $this->setValidator(RequiredFieldsValidator::create(static::config()->get('required_fields')));
     }
 
     /**
diff --git a/src/Security/Member_Validator.php b/src/Security/Member_Validator.php
index 6b979847dd7..a19bf76f30e 100644
--- a/src/Security/Member_Validator.php
+++ b/src/Security/Member_Validator.php
@@ -3,7 +3,7 @@
 namespace SilverStripe\Security;
 
 use SilverStripe\Forms\GridField\GridFieldDetailForm_ItemRequest;
-use SilverStripe\Forms\RequiredFields;
+use SilverStripe\Forms\RequiredFieldsValidator;
 
 /**
  * Member Validator
@@ -22,7 +22,7 @@
  *     - Surname
  * </code>
  */
-class Member_Validator extends RequiredFields
+class Member_Validator extends RequiredFieldsValidator
 {
     /**
      * Fields that are required by this validator
diff --git a/tests/php/Forms/CheckboxFieldTest.php b/tests/php/Forms/CheckboxFieldTest.php
index bbd3603492b..c1765af266d 100644
--- a/tests/php/Forms/CheckboxFieldTest.php
+++ b/tests/php/Forms/CheckboxFieldTest.php
@@ -9,7 +9,7 @@
 use SilverStripe\ORM\DB;
 use SilverStripe\Dev\SapphireTest;
 use SilverStripe\Forms\CheckboxField;
-use SilverStripe\Forms\RequiredFields;
+use SilverStripe\Forms\RequiredFieldsValidator;
 
 class CheckboxFieldTest extends SapphireTest
 {
@@ -200,7 +200,7 @@ public function testNoAriaRequired()
             "form",
             new FieldList($field),
             new FieldList(),
-            new RequiredFields(["RequiredField"])
+            new RequiredFieldsValidator(["RequiredField"])
         );
         $this->assertTrue($field->Required());
 
diff --git a/tests/php/Forms/CheckboxSetFieldTest.php b/tests/php/Forms/CheckboxSetFieldTest.php
index a9c717ae753..751ed2145a6 100644
--- a/tests/php/Forms/CheckboxSetFieldTest.php
+++ b/tests/php/Forms/CheckboxSetFieldTest.php
@@ -15,7 +15,7 @@
 use SilverStripe\Forms\CheckboxSetField;
 use SilverStripe\Forms\FieldList;
 use SilverStripe\Forms\Form;
-use SilverStripe\Forms\RequiredFields;
+use SilverStripe\Forms\RequiredFieldsValidator;
 use SilverStripe\Model\ArrayData;
 
 class CheckboxSetFieldTest extends SapphireTest
@@ -355,7 +355,7 @@ public function testNoAriaRequired()
             "form",
             new FieldList($field),
             new FieldList(),
-            new RequiredFields(["RequiredField"])
+            new RequiredFieldsValidator(["RequiredField"])
         );
         $this->assertTrue($field->Required());
 
diff --git a/tests/php/Forms/CompositeFieldTest.php b/tests/php/Forms/CompositeFieldTest.php
index f3b22dc711a..19845c8cd58 100644
--- a/tests/php/Forms/CompositeFieldTest.php
+++ b/tests/php/Forms/CompositeFieldTest.php
@@ -7,7 +7,7 @@
 use SilverStripe\Forms\CompositeField;
 use SilverStripe\Forms\DropdownField;
 use SilverStripe\Forms\FieldList;
-use SilverStripe\Forms\RequiredFields;
+use SilverStripe\Forms\RequiredFieldsValidator;
 use SilverStripe\Forms\TextField;
 
 class CompositeFieldTest extends SapphireTest
diff --git a/tests/php/Forms/CompositeValidatorTest.php b/tests/php/Forms/CompositeValidatorTest.php
index bcd79a41caf..8f1e7ed4f15 100644
--- a/tests/php/Forms/CompositeValidatorTest.php
+++ b/tests/php/Forms/CompositeValidatorTest.php
@@ -8,7 +8,7 @@
 use SilverStripe\Dev\SapphireTest;
 use SilverStripe\Forms\FieldList;
 use SilverStripe\Forms\Form;
-use SilverStripe\Forms\RequiredFields;
+use SilverStripe\Forms\RequiredFieldsValidator;
 use SilverStripe\Forms\Tests\ValidatorTest\TestValidator;
 use SilverStripe\Forms\TextField;
 use SilverStripe\Forms\CompositeValidator;
@@ -40,8 +40,8 @@ protected function getForm(array $fieldNames = []): Form
     public function testAddValidator(): void
     {
         $compositeValidator = new CompositeValidator();
-        $compositeValidator->addValidator(new RequiredFields());
-        $compositeValidator->addValidator(new RequiredFields());
+        $compositeValidator->addValidator(new RequiredFieldsValidator());
+        $compositeValidator->addValidator(new RequiredFieldsValidator());
 
         $this->assertCount(2, $compositeValidator->getValidators());
     }
@@ -76,38 +76,38 @@ public function testSetForm(): void
     public function testGetValidatorsByType(): void
     {
         $compositeValidator = new CompositeValidator();
-        $compositeValidator->addValidator(new RequiredFields());
+        $compositeValidator->addValidator(new RequiredFieldsValidator());
         $compositeValidator->addValidator(new TestValidator());
-        $compositeValidator->addValidator(new RequiredFields());
+        $compositeValidator->addValidator(new RequiredFieldsValidator());
         $compositeValidator->addValidator(new TestValidator());
 
         $this->assertCount(4, $compositeValidator->getValidators());
-        $this->assertCount(2, $compositeValidator->getValidatorsByType(RequiredFields::class));
+        $this->assertCount(2, $compositeValidator->getValidatorsByType(RequiredFieldsValidator::class));
     }
 
     public function testRemoveValidatorsByType(): void
     {
         $compositeValidator = new CompositeValidator();
-        $compositeValidator->addValidator(new RequiredFields());
+        $compositeValidator->addValidator(new RequiredFieldsValidator());
         $compositeValidator->addValidator(new TestValidator());
-        $compositeValidator->addValidator(new RequiredFields());
+        $compositeValidator->addValidator(new RequiredFieldsValidator());
         $compositeValidator->addValidator(new TestValidator());
 
         $this->assertCount(4, $compositeValidator->getValidators());
 
-        $compositeValidator->removeValidatorsByType(RequiredFields::class);
+        $compositeValidator->removeValidatorsByType(RequiredFieldsValidator::class);
         $this->assertCount(2, $compositeValidator->getValidators());
     }
 
     public function testCanBeCached(): void
     {
         $compositeValidator = new CompositeValidator();
-        $compositeValidator->addValidator(new RequiredFields());
+        $compositeValidator->addValidator(new RequiredFieldsValidator());
 
         $this->assertTrue($compositeValidator->canBeCached());
 
         $compositeValidator = new CompositeValidator();
-        $compositeValidator->addValidator(new RequiredFields(['Foor']));
+        $compositeValidator->addValidator(new RequiredFieldsValidator(['Foor']));
 
         $this->assertFalse($compositeValidator->canBeCached());
     }
@@ -121,12 +121,12 @@ public function testFieldIsRequired(): void
             'Content',
         ];
 
-        $requiredFieldsFirst = new RequiredFields(
+        $requiredFieldsFirst = new RequiredFieldsValidator(
             [
                 $fieldNames[0],
             ]
         );
-        $requiredFieldsSecond = new RequiredFields(
+        $requiredFieldsSecond = new RequiredFieldsValidator(
             [
                 $fieldNames[1],
             ]
@@ -147,8 +147,8 @@ public function testValidate(): void
     {
         $compositeValidator = new CompositeValidator();
         // Add two separate validators, each with one required field
-        $compositeValidator->addValidator(new RequiredFields(['Foo']));
-        $compositeValidator->addValidator(new RequiredFields(['Bar']));
+        $compositeValidator->addValidator(new RequiredFieldsValidator(['Foo']));
+        $compositeValidator->addValidator(new RequiredFieldsValidator(['Bar']));
 
         // Setup a form with the fields/data we're testing (a form is a dependency for validation right now)
         // We'll add three empty fields, but only two of them should be required
diff --git a/tests/php/Forms/ConfirmedPasswordFieldTest.php b/tests/php/Forms/ConfirmedPasswordFieldTest.php
index 7fb6f643d3f..c34b6c16067 100644
--- a/tests/php/Forms/ConfirmedPasswordFieldTest.php
+++ b/tests/php/Forms/ConfirmedPasswordFieldTest.php
@@ -9,7 +9,7 @@
 use SilverStripe\Forms\FieldList;
 use SilverStripe\Forms\Form;
 use SilverStripe\Forms\ReadonlyField;
-use SilverStripe\Forms\RequiredFields;
+use SilverStripe\Forms\RequiredFieldsValidator;
 use SilverStripe\Security\Member;
 use SilverStripe\View\SSViewer;
 use Closure;
@@ -466,7 +466,7 @@ public function testChildFieldsAreRequired(bool $canBeEmpty, bool $required, boo
                 $requiredFields[] = 'Test[_Password]';
                 $requiredFields[] = 'Test[_ConfirmPassword]';
             }
-            $form->setValidator(new RequiredFields($requiredFields));
+            $form->setValidator(new RequiredFieldsValidator($requiredFields));
 
             $rendered = $field->Field();
             $fieldOneRegex = '<input\s+type="password"\s+name="Test\[_Password\]"\s[^>]*?required="required"\s+aria-required="true"\s[^>]*\/>';
diff --git a/tests/php/Forms/CurrencyFieldTest.php b/tests/php/Forms/CurrencyFieldTest.php
index af08d227595..ae7b28f98c4 100644
--- a/tests/php/Forms/CurrencyFieldTest.php
+++ b/tests/php/Forms/CurrencyFieldTest.php
@@ -6,7 +6,7 @@
 use SilverStripe\Dev\SapphireTest;
 use SilverStripe\Forms\CurrencyField;
 use SilverStripe\Forms\CurrencyField_Readonly;
-use SilverStripe\Forms\RequiredFields;
+use SilverStripe\Forms\RequiredFieldsValidator;
 use SilverStripe\ORM\FieldType\DBCurrency;
 
 class CurrencyFieldTest extends SapphireTest
diff --git a/tests/php/Forms/DateFieldTest.php b/tests/php/Forms/DateFieldTest.php
index 9ac536bc2e3..042c1c8d2a2 100644
--- a/tests/php/Forms/DateFieldTest.php
+++ b/tests/php/Forms/DateFieldTest.php
@@ -7,7 +7,7 @@
 use SilverStripe\Dev\SapphireTest;
 use SilverStripe\Forms\DateField;
 use SilverStripe\Forms\DateField_Disabled;
-use SilverStripe\Forms\RequiredFields;
+use SilverStripe\Forms\RequiredFieldsValidator;
 use SilverStripe\i18n\i18n;
 use SilverStripe\ORM\FieldType\DBDate;
 use SilverStripe\ORM\FieldType\DBDatetime;
diff --git a/tests/php/Forms/DatetimeFieldTest.php b/tests/php/Forms/DatetimeFieldTest.php
index 68e31a4eac8..8c30013343a 100644
--- a/tests/php/Forms/DatetimeFieldTest.php
+++ b/tests/php/Forms/DatetimeFieldTest.php
@@ -9,7 +9,7 @@
 use SilverStripe\Forms\FieldList;
 use SilverStripe\Forms\Form;
 use SilverStripe\Forms\FormAction;
-use SilverStripe\Forms\RequiredFields;
+use SilverStripe\Forms\RequiredFieldsValidator;
 use SilverStripe\Forms\Tests\DatetimeFieldTest\Model;
 use SilverStripe\i18n\i18n;
 use SilverStripe\ORM\FieldType\DBDatetime;
diff --git a/tests/php/Forms/DropdownFieldTest.php b/tests/php/Forms/DropdownFieldTest.php
index 8e4de0e2fbe..0213c0950e1 100644
--- a/tests/php/Forms/DropdownFieldTest.php
+++ b/tests/php/Forms/DropdownFieldTest.php
@@ -7,7 +7,7 @@
 use SilverStripe\Dev\CSSContentParser;
 use SilverStripe\Dev\SapphireTest;
 use SilverStripe\Forms\DropdownField;
-use SilverStripe\Forms\RequiredFields;
+use SilverStripe\Forms\RequiredFieldsValidator;
 use SilverStripe\Forms\FormTemplateHelper;
 use SilverStripe\Forms\FieldList;
 use SilverStripe\Forms\Form;
@@ -574,7 +574,7 @@ public function testRequiredDropdownHasEmptyDefault()
             "form",
             new FieldList($field),
             new FieldList(),
-            new RequiredFields(["RequiredField"])
+            new RequiredFieldsValidator(["RequiredField"])
         );
 
         $this->assertTrue($field->getHasEmptyDefault());
diff --git a/tests/php/Forms/EmailFieldTest.php b/tests/php/Forms/EmailFieldTest.php
index d46ceae1214..106aca3ca37 100644
--- a/tests/php/Forms/EmailFieldTest.php
+++ b/tests/php/Forms/EmailFieldTest.php
@@ -4,7 +4,7 @@
 
 use SilverStripe\Dev\FunctionalTest;
 use SilverStripe\Forms\EmailField;
-use SilverStripe\Forms\FieldsValidator;
+use SilverStripe\Forms\FormFieldsValidator;
 
 class EmailFieldTest extends FunctionalTest
 {
diff --git a/tests/php/Forms/EmailFieldTest/TestController.php b/tests/php/Forms/EmailFieldTest/TestController.php
index fd01418e34f..3e5546e0322 100644
--- a/tests/php/Forms/EmailFieldTest/TestController.php
+++ b/tests/php/Forms/EmailFieldTest/TestController.php
@@ -9,7 +9,7 @@
 use SilverStripe\Forms\FieldList;
 use SilverStripe\Forms\Form;
 use SilverStripe\Forms\FormAction;
-use SilverStripe\Forms\RequiredFields;
+use SilverStripe\Forms\RequiredFieldsValidator;
 use SilverStripe\View\SSViewer;
 
 class TestController extends Controller implements TestOnly
@@ -54,7 +54,7 @@ public function Form()
             new FieldList(
                 new FormAction('doSubmit')
             ),
-            new RequiredFields(
+            new RequiredFieldsValidator(
                 'Email'
             )
         );
diff --git a/tests/php/Forms/FieldsValidatorTest.php b/tests/php/Forms/FieldsValidatorTest.php
index d5eac24d9c4..88d328fab21 100644
--- a/tests/php/Forms/FieldsValidatorTest.php
+++ b/tests/php/Forms/FieldsValidatorTest.php
@@ -5,11 +5,11 @@
 use SilverStripe\Dev\SapphireTest;
 use SilverStripe\Forms\EmailField;
 use SilverStripe\Forms\FieldList;
-use SilverStripe\Forms\FieldsValidator;
+use SilverStripe\Forms\FormFieldsValidator;
 use SilverStripe\Forms\Form;
 use PHPUnit\Framework\Attributes\DataProvider;
 
-class FieldsValidatorTest extends SapphireTest
+class FormFieldsValidatorTest extends SapphireTest
 {
     protected $usesDatabase = false;
 
@@ -64,7 +64,7 @@ public function testValidation(array $values, bool $isValid)
         if (array_key_exists('EmailField2', $values)) {
             $field2->setValue($values['EmailField2']);
         }
-        $form = new Form(null, 'testForm', $fieldList, new FieldList([/* no actions */]), new FieldsValidator());
+        $form = new Form(null, 'testForm', $fieldList, new FieldList([/* no actions */]), new FormFieldsValidator());
 
         $result = $form->validationResult();
         $this->assertSame($isValid, $result->isValid());
diff --git a/tests/php/Forms/FileFieldTest.php b/tests/php/Forms/FileFieldTest.php
index 3529b5eea1f..45411ebe5a9 100644
--- a/tests/php/Forms/FileFieldTest.php
+++ b/tests/php/Forms/FileFieldTest.php
@@ -10,7 +10,7 @@
 use SilverStripe\Forms\FileField;
 use SilverStripe\Forms\FieldList;
 use SilverStripe\Forms\Form;
-use SilverStripe\Forms\RequiredFields;
+use SilverStripe\Forms\RequiredFieldsValidator;
 
 class FileFieldTest extends FunctionalTest
 {
@@ -126,7 +126,7 @@ public function testUploadMissingRequiredFile()
                 $fileField = new FileField('cv', 'Upload your CV')
             ),
             new FieldList(),
-            new RequiredFields('cv')
+            new RequiredFieldsValidator('cv')
         );
         // All fields are filled but for some reason an error occurred when uploading the file => fails
         $fileFieldValue = [
diff --git a/tests/php/Forms/FormFieldTest.php b/tests/php/Forms/FormFieldTest.php
index 0611999e6e0..0fc0e2592cf 100644
--- a/tests/php/Forms/FormFieldTest.php
+++ b/tests/php/Forms/FormFieldTest.php
@@ -19,7 +19,7 @@
 use SilverStripe\Forms\NullableField;
 use SilverStripe\Forms\PopoverField;
 use SilverStripe\Forms\PrintableTransformation_TabSet;
-use SilverStripe\Forms\RequiredFields;
+use SilverStripe\Forms\RequiredFieldsValidator;
 use SilverStripe\Forms\SelectionGroup;
 use SilverStripe\Forms\SelectionGroup_Item;
 use SilverStripe\Forms\Tab;
@@ -40,7 +40,7 @@
 use PHPUnit\Framework\Attributes\DataProvider;
 use SilverStripe\Core\Injector\Injector;
 use SilverStripe\Forms\ConfirmedPasswordField;
-use SilverStripe\Forms\FieldsValidator;
+use SilverStripe\Forms\FormFieldsValidator;
 use SilverStripe\Forms\NumericField;
 use SilverStripe\Forms\CheckboxField_Readonly;
 use SilverStripe\VersionedAdmin\Forms\DiffField;
@@ -532,7 +532,7 @@ public function testSetSchemaState()
     public function testGetSchemaStateWithFormValidation()
     {
         $field = new FormField('MyField', 'My Field');
-        $validator = new RequiredFields('MyField');
+        $validator = new RequiredFieldsValidator('MyField');
         $form = new Form(null, 'TestForm', new FieldList($field), new FieldList(), $validator);
         $form->validationResult();
         $schema = $field->getSchemaState();
@@ -547,7 +547,7 @@ public function testValidationExtensionHooks()
         /** @var TextField|FieldValidationExtension $field */
         $field = new TextField('Test');
         $field->setMaxLength(5);
-        $form = new Form(null, 'test', new FieldList($field), new FieldList(), new FieldsValidator());
+        $form = new Form(null, 'test', new FieldList($field), new FieldList(), new FormFieldsValidator());
         $form->disableSecurityToken();
 
         $field->setValue('IAmLongerThan5Characters');
diff --git a/tests/php/Forms/FormSchemaTest.php b/tests/php/Forms/FormSchemaTest.php
index ed78a8ef70c..c7d4f806e8d 100644
--- a/tests/php/Forms/FormSchemaTest.php
+++ b/tests/php/Forms/FormSchemaTest.php
@@ -11,7 +11,7 @@
 use SilverStripe\Forms\FieldList;
 use SilverStripe\Forms\Form;
 use SilverStripe\Forms\TextField;
-use SilverStripe\Forms\RequiredFields;
+use SilverStripe\Forms\RequiredFieldsValidator;
 use SilverStripe\Forms\FormAction;
 use SilverStripe\Forms\PopoverField;
 use SilverStripe\Forms\FormField;
@@ -141,7 +141,7 @@ public function testGetStateWithFieldValidationErrors()
     {
         $fields = new FieldList(new TextField('Title'));
         $actions = new FieldList();
-        $validator = new RequiredFields('Title');
+        $validator = new RequiredFieldsValidator('Title');
         $form = new Form(null, 'TestForm', $fields, $actions, $validator);
         $form->clearMessage();
         $form->loadDataFrom(
@@ -240,7 +240,7 @@ public function testSchemaValidation()
                 new CurrencyField("Money")
             ),
             new FieldList(),
-            new RequiredFields('Name')
+            new RequiredFieldsValidator('Name')
         );
         $formSchema = new FormSchema();
         $schema = $formSchema->getSchema($form);
diff --git a/tests/php/Forms/FormTest/ControllerWithSpecialSubmittedValueFields.php b/tests/php/Forms/FormTest/ControllerWithSpecialSubmittedValueFields.php
index 538261bd6c9..0379840a4dc 100644
--- a/tests/php/Forms/FormTest/ControllerWithSpecialSubmittedValueFields.php
+++ b/tests/php/Forms/FormTest/ControllerWithSpecialSubmittedValueFields.php
@@ -12,7 +12,7 @@
 use SilverStripe\Forms\FormAction;
 use SilverStripe\Forms\MoneyField;
 use SilverStripe\Forms\NumericField;
-use SilverStripe\Forms\RequiredFields;
+use SilverStripe\Forms\RequiredFieldsValidator;
 use SilverStripe\Forms\TextField;
 use SilverStripe\Core\Validation\ValidationException;
 use SilverStripe\Core\Validation\ValidationResult;
@@ -69,7 +69,7 @@ public function Form()
             new FieldList(
                 FormAction::create('doSubmit')
             ),
-            new RequiredFields(
+            new RequiredFieldsValidator(
                 'SomeRequiredField'
             )
         );
diff --git a/tests/php/Forms/FormTest/TestController.php b/tests/php/Forms/FormTest/TestController.php
index a9ca0a1259d..cc3beb48a44 100644
--- a/tests/php/Forms/FormTest/TestController.php
+++ b/tests/php/Forms/FormTest/TestController.php
@@ -11,7 +11,7 @@
 use SilverStripe\Forms\Form;
 use SilverStripe\Forms\FormAction;
 use SilverStripe\Forms\NumericField;
-use SilverStripe\Forms\RequiredFields;
+use SilverStripe\Forms\RequiredFieldsValidator;
 use SilverStripe\Forms\TextField;
 use SilverStripe\Core\Validation\ValidationException;
 use SilverStripe\Core\Validation\ValidationResult;
@@ -66,7 +66,7 @@ public function Form()
                 FormAction::create('doSubmitActionExempt')
                     ->setValidationExempt(true)
             ),
-            new RequiredFields(
+            new RequiredFieldsValidator(
                 'Email',
                 'SomeRequiredField'
             )
diff --git a/tests/php/Forms/GridField/GridFieldDetailFormTest/Person.php b/tests/php/Forms/GridField/GridFieldDetailFormTest/Person.php
index c5f33364065..26ddade234c 100644
--- a/tests/php/Forms/GridField/GridFieldDetailFormTest/Person.php
+++ b/tests/php/Forms/GridField/GridFieldDetailFormTest/Person.php
@@ -5,7 +5,7 @@
 use SilverStripe\Dev\TestOnly;
 use SilverStripe\Forms\GridField\GridField;
 use SilverStripe\Forms\GridField\GridFieldConfig_RelationEditor;
-use SilverStripe\Forms\RequiredFields;
+use SilverStripe\Forms\RequiredFieldsValidator;
 use SilverStripe\ORM\DataObject;
 use SilverStripe\ORM\DataObjectSchema;
 
@@ -67,7 +67,7 @@ public function getCMSFields()
 
     public function getCMSValidator()
     {
-        return new RequiredFields(
+        return new RequiredFieldsValidator(
             [
             'FirstName',
             'Surname'
diff --git a/tests/php/Forms/GridField/GridFieldTest.php b/tests/php/Forms/GridField/GridFieldTest.php
index d80a9a70c62..4890b169b21 100644
--- a/tests/php/Forms/GridField/GridFieldTest.php
+++ b/tests/php/Forms/GridField/GridFieldTest.php
@@ -22,7 +22,7 @@
 use SilverStripe\Forms\GridField\GridState;
 use SilverStripe\Forms\GridField\GridState_Component;
 use SilverStripe\Forms\GridField\GridState_Data;
-use SilverStripe\Forms\RequiredFields;
+use SilverStripe\Forms\RequiredFieldsValidator;
 use SilverStripe\Forms\Tests\GridField\GridFieldTest\Cheerleader;
 use SilverStripe\Forms\Tests\GridField\GridFieldTest\Component;
 use SilverStripe\Forms\Tests\GridField\GridFieldTest\Component2;
@@ -551,7 +551,7 @@ public function testValidationMessageInOutput()
         $gridField->setMessage(null);
 
         // A form that passes validation should not display a validation error in the FieldHolder output.
-        $form->setValidator(new RequiredFields());
+        $form->setValidator(new RequiredFieldsValidator());
         $form->validationResult();
         $gridfieldOutput = $gridField->FieldHolder();
         $this->assertStringNotContainsString('<p class="message ' . ValidationResult::TYPE_ERROR . '">', $gridfieldOutput);
diff --git a/tests/php/Forms/GroupedDropdownFieldTest.php b/tests/php/Forms/GroupedDropdownFieldTest.php
index d382afcbe6d..d7e6991feb2 100644
--- a/tests/php/Forms/GroupedDropdownFieldTest.php
+++ b/tests/php/Forms/GroupedDropdownFieldTest.php
@@ -4,7 +4,7 @@
 
 use SilverStripe\Dev\SapphireTest;
 use SilverStripe\Forms\GroupedDropdownField;
-use SilverStripe\Forms\RequiredFields;
+use SilverStripe\Forms\RequiredFieldsValidator;
 
 class GroupedDropdownFieldTest extends SapphireTest
 {
diff --git a/tests/php/Forms/ListboxFieldTest.php b/tests/php/Forms/ListboxFieldTest.php
index b451f97b590..0b0d3a5aa15 100644
--- a/tests/php/Forms/ListboxFieldTest.php
+++ b/tests/php/Forms/ListboxFieldTest.php
@@ -9,7 +9,7 @@
 use SilverStripe\Dev\CSSContentParser;
 use SilverStripe\Dev\SapphireTest;
 use SilverStripe\Forms\ListboxField;
-use SilverStripe\Forms\RequiredFields;
+use SilverStripe\Forms\RequiredFieldsValidator;
 use SilverStripe\Model\ArrayData;
 use PHPUnit\Framework\Attributes\DataProvider;
 
diff --git a/tests/php/Forms/MoneyFieldTest.php b/tests/php/Forms/MoneyFieldTest.php
index d48b393301b..dd99e2c0808 100644
--- a/tests/php/Forms/MoneyFieldTest.php
+++ b/tests/php/Forms/MoneyFieldTest.php
@@ -5,7 +5,7 @@
 use SilverStripe\Forms\DropdownField;
 use SilverStripe\Forms\HiddenField;
 use SilverStripe\Forms\NumericField;
-use SilverStripe\Forms\RequiredFields;
+use SilverStripe\Forms\RequiredFieldsValidator;
 use SilverStripe\Forms\Tests\MoneyFieldTest\CustomSetter_Object;
 use SilverStripe\Forms\Tests\MoneyFieldTest\TestObject;
 use SilverStripe\Forms\TextField;
diff --git a/tests/php/Forms/NumericFieldTest.php b/tests/php/Forms/NumericFieldTest.php
index 6637f3d55b6..7f10b6a1068 100644
--- a/tests/php/Forms/NumericFieldTest.php
+++ b/tests/php/Forms/NumericFieldTest.php
@@ -4,7 +4,7 @@
 
 use SilverStripe\Dev\SapphireTest;
 use SilverStripe\Forms\NumericField;
-use SilverStripe\Forms\RequiredFields;
+use SilverStripe\Forms\RequiredFieldsValidator;
 use SilverStripe\i18n\i18n;
 use PHPUnit\Framework\Attributes\DataProvider;
 
diff --git a/tests/php/Forms/OptionsetFieldTest.php b/tests/php/Forms/OptionsetFieldTest.php
index 0528e7ed268..8f43ecee9dd 100644
--- a/tests/php/Forms/OptionsetFieldTest.php
+++ b/tests/php/Forms/OptionsetFieldTest.php
@@ -7,7 +7,7 @@
 use SilverStripe\Dev\CSSContentParser;
 use SilverStripe\Dev\SapphireTest;
 use SilverStripe\Forms\OptionsetField;
-use SilverStripe\Forms\RequiredFields;
+use SilverStripe\Forms\RequiredFieldsValidator;
 use SilverStripe\Forms\FieldList;
 use SilverStripe\Forms\Form;
 
@@ -46,7 +46,7 @@ public function testValidation()
             "Five" => "Five"
             ]
         );
-        $validator = new RequiredFields('Test');
+        $validator = new RequiredFieldsValidator('Test');
         $form = new Form(null, 'Form', new FieldList($field), new FieldList(), $validator);
 
         $field->setValue("One");
@@ -60,14 +60,14 @@ public function testValidation()
         $field->setValue('');
         $this->assertFalse($field->validate()->isValid());
 
-        // ... and should not pass "RequiredFields" validation
+        // ... and should not pass "RequiredFieldsValidator" validation
         $this->assertFalse($form->validationResult()->isValid());
 
         // null value should pass field-level validation...
         $field->setValue(null);
         $this->assertTrue($field->validate()->isValid());
 
-        // ... but should not pass "RequiredFields" validation
+        // ... but should not pass "RequiredFieldsValidator" validation
         $this->assertFalse($form->validationResult()->isValid());
 
         // disabled items shouldn't validate
@@ -118,7 +118,7 @@ public function testNoAriaRequired()
             "form",
             new FieldList($field),
             new FieldList(),
-            new RequiredFields(["RequiredField"])
+            new RequiredFieldsValidator(["RequiredField"])
         );
         $this->assertTrue($field->Required());
 
diff --git a/tests/php/Forms/RequiredFieldsTest.php b/tests/php/Forms/RequiredFieldsTest.php
index 3ee6e8d2732..63ad4db7dae 100644
--- a/tests/php/Forms/RequiredFieldsTest.php
+++ b/tests/php/Forms/RequiredFieldsTest.php
@@ -3,14 +3,14 @@
 namespace SilverStripe\Forms\Tests;
 
 use SilverStripe\Dev\SapphireTest;
-use SilverStripe\Forms\RequiredFields;
+use SilverStripe\Forms\RequiredFieldsValidator;
 use SilverStripe\Forms\Form;
 use SilverStripe\Forms\SearchableDropdownField;
 use SilverStripe\Forms\TreeDropdownField;
 use SilverStripe\Security\Group;
 use PHPUnit\Framework\Attributes\DataProvider;
 
-class RequiredFieldsTest extends SapphireTest
+class RequiredFieldsValidatorTest extends SapphireTest
 {
     public function testConstructingWithArray()
     {
@@ -21,7 +21,7 @@ public function testConstructingWithArray()
             'Image',
             'AnotherField'
         ];
-        $requiredFields = new RequiredFields($fields);
+        $requiredFields = new RequiredFieldsValidator($fields);
         //check the fields and the array match
         $this->assertEquals(
             $fields,
@@ -33,7 +33,7 @@ public function testConstructingWithArray()
     public function testConstructingWithArguments()
     {
         //can we construct with arguments?
-        $requiredFields = new RequiredFields(
+        $requiredFields = new RequiredFieldsValidator(
             'Title',
             'Content',
             'Image',
@@ -55,7 +55,7 @@ public function testConstructingWithArguments()
     public function testRemoveValidation()
     {
         //can we remove all fields at once?
-        $requiredFields = new RequiredFields(
+        $requiredFields = new RequiredFieldsValidator(
             'Title',
             'Content',
             'Image',
@@ -72,7 +72,7 @@ public function testRemoveValidation()
     public function testRemoveRequiredField()
     {
         //set up the required fields
-        $requiredFields = new RequiredFields(
+        $requiredFields = new RequiredFieldsValidator(
             'Title',
             'Content',
             'Image',
@@ -115,7 +115,7 @@ public function testRemoveRequiredField()
     public function testAddRequiredField()
     {
         //set up the validator
-        $requiredFields = new RequiredFields(
+        $requiredFields = new RequiredFieldsValidator(
             'Title'
         );
         //add a field
@@ -181,14 +181,14 @@ public function testAddRequiredField()
     public function testAppendRequiredFields()
     {
         //get the validator
-        $requiredFields = new RequiredFields(
+        $requiredFields = new RequiredFieldsValidator(
             'Title',
             'Content',
             'Image',
             'AnotherField'
         );
         //create another validator with other fields
-        $otherRequiredFields = new RequiredFields(
+        $otherRequiredFields = new RequiredFieldsValidator(
             [
             'ExtraField1',
             'ExtraField2'
@@ -210,7 +210,7 @@ public function testAppendRequiredFields()
             "Merging of required fields failed to behave as expected"
         );
         // create the standard validator so we can check duplicates are ignored
-        $otherRequiredFields = new RequiredFields(
+        $otherRequiredFields = new RequiredFieldsValidator(
             'Title',
             'Content',
             'Image',
@@ -232,7 +232,7 @@ public function testAppendRequiredFields()
             "Merging of required fields with duplicates failed to behave as expected"
         );
         //add some new fields and some old ones in a strange order
-        $otherRequiredFields = new RequiredFields(
+        $otherRequiredFields = new RequiredFieldsValidator(
             'ExtraField3',
             'Title',
             'ExtraField4',
@@ -261,7 +261,7 @@ public function testAppendRequiredFields()
     public function testFieldIsRequired()
     {
         //get the validator
-        $requiredFields = new RequiredFields(
+        $requiredFields = new RequiredFieldsValidator(
             $fieldNames = [
             'Title',
             'Content',
@@ -310,7 +310,7 @@ public function testHasOneRelationFieldInterfaceValidation(string $className)
         $param = $className === TreeDropdownField::class ? Group::class : Group::get();
         $field = new $className('TestField', 'TestField', $param);
         $form->Fields()->push($field);
-        $validator = new RequiredFields('TestField');
+        $validator = new RequiredFieldsValidator('TestField');
         $validator->setForm($form);
         // blank string and 0 and '0' and array with value of 0 fail required field validation
         $this->assertFalse($validator->php(['TestField' => '']));
diff --git a/tests/php/Forms/TextFieldTest.php b/tests/php/Forms/TextFieldTest.php
index 062867cad19..2815b28b4a9 100644
--- a/tests/php/Forms/TextFieldTest.php
+++ b/tests/php/Forms/TextFieldTest.php
@@ -4,7 +4,7 @@
 
 use SilverStripe\Dev\SapphireTest;
 use SilverStripe\Forms\TextField;
-use SilverStripe\Forms\RequiredFields;
+use SilverStripe\Forms\RequiredFieldsValidator;
 use SilverStripe\Forms\Tip;
 use PHPUnit\Framework\Attributes\DataProvider;
 
diff --git a/tests/php/Forms/TextareaFieldTest.php b/tests/php/Forms/TextareaFieldTest.php
index fa481b6a6c3..71683617695 100644
--- a/tests/php/Forms/TextareaFieldTest.php
+++ b/tests/php/Forms/TextareaFieldTest.php
@@ -4,7 +4,7 @@
 
 use SilverStripe\Dev\SapphireTest;
 use SilverStripe\Forms\TextareaField;
-use SilverStripe\Forms\RequiredFields;
+use SilverStripe\Forms\RequiredFieldsValidator;
 use PHPUnit\Framework\Attributes\DataProvider;
 
 class TextareaFieldTest extends SapphireTest
diff --git a/tests/php/Forms/TimeFieldTest.php b/tests/php/Forms/TimeFieldTest.php
index 35d0e9fdd27..3d1abd68316 100644
--- a/tests/php/Forms/TimeFieldTest.php
+++ b/tests/php/Forms/TimeFieldTest.php
@@ -7,7 +7,7 @@
 use SilverStripe\Core\Config\Config;
 use SilverStripe\Dev\SapphireTest;
 use SilverStripe\Forms\TimeField;
-use SilverStripe\Forms\RequiredFields;
+use SilverStripe\Forms\RequiredFieldsValidator;
 use SilverStripe\i18n\i18n;
 use PHPUnit\Framework\Attributes\DataProvider;
 use ReflectionMethod;
diff --git a/tests/php/Forms/TreeDropdownFieldTest.php b/tests/php/Forms/TreeDropdownFieldTest.php
index 012b22b9a32..7362c51e4d2 100644
--- a/tests/php/Forms/TreeDropdownFieldTest.php
+++ b/tests/php/Forms/TreeDropdownFieldTest.php
@@ -10,7 +10,7 @@
 use SilverStripe\Control\HTTPRequest;
 use SilverStripe\Forms\FieldList;
 use SilverStripe\Forms\Form;
-use SilverStripe\Forms\RequiredFields;
+use SilverStripe\Forms\RequiredFieldsValidator;
 use SilverStripe\Forms\TreeDropdownField;
 use SilverStripe\ORM\DataObject;
 use SilverStripe\ORM\Tests\HierarchyTest\HierarchyOnSubclassTestObject;
@@ -61,7 +61,7 @@ public function testGetSchemaValidation(): void
         $this->assertSame($expected, $field->getSchemaValidation());
         // field is required
         $fieldList = new FieldList([$field]);
-        $validator = new RequiredFields('TestTree');
+        $validator = new RequiredFieldsValidator('TestTree');
         new Form(null, null, $fieldList, null, $validator);
         $expected = [
             'required' => ['extraEmptyValues' => ['0']],
diff --git a/tests/php/Forms/UrlFieldTest.php b/tests/php/Forms/UrlFieldTest.php
index da55e05e993..d6393f206ed 100644
--- a/tests/php/Forms/UrlFieldTest.php
+++ b/tests/php/Forms/UrlFieldTest.php
@@ -4,7 +4,7 @@
 
 use SilverStripe\Dev\SapphireTest;
 use SilverStripe\Forms\UrlField;
-use SilverStripe\Forms\RequiredFields;
+use SilverStripe\Forms\RequiredFieldsValidator;
 use PHPUnit\Framework\Attributes\DataProvider;
 
 class UrlFieldTest extends SapphireTest
diff --git a/tests/php/Security/GroupTest.php b/tests/php/Security/GroupTest.php
index 1834f019ed8..ab6a44fa777 100644
--- a/tests/php/Security/GroupTest.php
+++ b/tests/php/Security/GroupTest.php
@@ -5,7 +5,7 @@
 use InvalidArgumentException;
 use SilverStripe\Control\Controller;
 use SilverStripe\Dev\FunctionalTest;
-use SilverStripe\Forms\RequiredFields;
+use SilverStripe\Forms\RequiredFieldsValidator;
 use SilverStripe\Model\List\ArrayList;
 use SilverStripe\ORM\DataObject;
 use SilverStripe\Security\Group;
@@ -287,10 +287,10 @@ public function testGroupTitleValidation()
 
         $newGroup = new Group();
 
-        $validators = $newGroup->getCMSCompositeValidator()->getValidatorsByType(RequiredFields::class);
+        $validators = $newGroup->getCMSCompositeValidator()->getValidatorsByType(RequiredFieldsValidator::class);
         $this->assertCount(1, $validators);
         $validator = array_shift($validators);
-        $this->assertInstanceOf(RequiredFields::class, $validator);
+        $this->assertInstanceOf(RequiredFieldsValidator::class, $validator);
         $this->assertTrue(in_array('Title', $validator->getRequired() ?? []));
 
         $newGroup->Title = $group1->Title;