diff --git a/src/bundle/Resources/config/services/rest.yaml b/src/bundle/Resources/config/services/rest.yaml
index 38f007e730..f5804287b3 100644
--- a/src/bundle/Resources/config/services/rest.yaml
+++ b/src/bundle/Resources/config/services/rest.yaml
@@ -44,7 +44,7 @@ services:
   Ibexa\AdminUi\REST\Input\Parser\ContentType\FieldDefinitionCreate:
     parent: Ibexa\Rest\Server\Common\Parser
     tags:
-      - { name: ibexa.rest.input.parser, mediaType: application/vnd.ibexa.api.ContentTypFieldDefinitionCreate }
+      - { name: ibexa.rest.input.parser, mediaType: application/vnd.ibexa.api.ContentTypeFieldDefinitionCreate }
 
   Ibexa\AdminUi\REST\Input\Parser\ContentType\FieldDefinitionDelete:
     parent: Ibexa\Rest\Server\Common\Parser
diff --git a/src/bundle/Resources/public/js/scripts/admin.contenttype.edit.js b/src/bundle/Resources/public/js/scripts/admin.contenttype.edit.js
index 109bcdab2c..c1db46f231 100644
--- a/src/bundle/Resources/public/js/scripts/admin.contenttype.edit.js
+++ b/src/bundle/Resources/public/js/scripts/admin.contenttype.edit.js
@@ -25,7 +25,7 @@
         add: {
             actionName: 'add_field_definition',
             method: 'POST',
-            contentType: 'application/vnd.ibexa.api.ContentTypFieldDefinitionCreate+json',
+            contentType: 'application/vnd.ibexa.api.ContentTypeFieldDefinitionCreate+json',
         },
         remove: {
             actionName: 'remove_field_definition',