diff --git a/plugins/editors/tinymce/src/Extension/TinyMCE.php b/plugins/editors/tinymce/src/Extension/TinyMCE.php
index b0d5d9b3a2b06..98231cb3eb5ea 100644
--- a/plugins/editors/tinymce/src/Extension/TinyMCE.php
+++ b/plugins/editors/tinymce/src/Extension/TinyMCE.php
@@ -47,7 +47,10 @@ final class TinyMCE extends CMSPlugin implements SubscriberInterface
      */
     public static function getSubscribedEvents(): array
     {
-        return ['onEditorSetup' => 'onEditorSetup'];
+        return [
+            'onEditorSetup' => 'onEditorSetup',
+            'onAjaxTinymce' => 'onAjaxTinymce',
+        ];
     }
 
     /**