diff --git a/core/modules/ckeditor/templates/ckeditor-settings-toolbar.html.twig b/core/modules/ckeditor/templates/ckeditor-settings-toolbar.html.twig
index 18d3558..daf1301 100644
--- a/core/modules/ckeditor/templates/ckeditor-settings-toolbar.html.twig
+++ b/core/modules/ckeditor/templates/ckeditor-settings-toolbar.html.twig
@@ -68,6 +68,7 @@
             <ul class="ckeditor-buttons"></ul>
           </li>
         {% endfor %}
+        </ul>
       </div>
     </div>
   </fieldset>