diff --git a/src/Plugin/Condition/ParentNodeOfNodeHasTerm.php b/src/Plugin/Condition/ParentNodeOfNodeHasTerm.php
index 0cff89a80..2caaa6d24 100644
--- a/src/Plugin/Condition/ParentNodeOfNodeHasTerm.php
+++ b/src/Plugin/Condition/ParentNodeOfNodeHasTerm.php
@@ -26,6 +26,16 @@
  */
 class ParentNodeOfNodeHasTerm extends NodeHasTerm {
 
+  /**
+   * {@inheritdoc}
+   */
+  public function buildConfigurationForm(array $form, FormStateInterface $form_state) {
+    $form = parent::buildConfigurationForm($form, $form_state);
+    // Make term not required.
+    $form['term']['#required'] = FALSE;
+    return $form;
+  }
+
   /**
    * {@inheritdoc}
    */