diff --git a/core/modules/ckeditor5/js/ckeditor5.admin.es6.js b/core/modules/ckeditor5/js/ckeditor5.admin.es6.js
index f40f4b0e96d..dfa136b9098 100644
--- a/core/modules/ckeditor5/js/ckeditor5.admin.es6.js
+++ b/core/modules/ckeditor5/js/ckeditor5.admin.es6.js
@@ -919,7 +919,7 @@
       listType === 'divider'
     }">
         <span class="ckeditor5-toolbar-button ckeditor5-toolbar-button-${id}">
-          <span class="visually-hidden">${visuallyHiddenLabel})}</span>
+          <span class="visually-hidden">${visuallyHiddenLabel}</span>
         </span>
         <span class="ckeditor5-toolbar-tooltip" aria-hidden="true">${label}</span>
       </li>
diff --git a/core/modules/ckeditor5/js/ckeditor5.admin.js b/core/modules/ckeditor5/js/ckeditor5.admin.js
index 1d031035f35..0c66220203e 100644
--- a/core/modules/ckeditor5/js/ckeditor5.admin.js
+++ b/core/modules/ckeditor5/js/ckeditor5.admin.js
@@ -546,7 +546,7 @@ function _createClass(Constructor, protoProps, staticProps) { if (protoProps) _d
       '@listType': listType !== 'divider' ? listType : 'available',
       '@label': label
     });
-    return "\n      <li class=\"ckeditor5-toolbar-item ckeditor5-toolbar-item-".concat(id, "\" role=\"option\" tabindex=\"0\" data-drupal-selector=\"ckeditor5-toolbar-button\" data-id=\"").concat(id, "\" data-label=\"").concat(label, "\" data-divider=\"").concat(listType === 'divider', "\">\n        <span class=\"ckeditor5-toolbar-button ckeditor5-toolbar-button-").concat(id, "\">\n          <span class=\"visually-hidden\">").concat(visuallyHiddenLabel, ")}</span>\n        </span>\n        <span class=\"ckeditor5-toolbar-tooltip\" aria-hidden=\"true\">").concat(label, "</span>\n      </li>\n    ");
+    return "\n      <li class=\"ckeditor5-toolbar-item ckeditor5-toolbar-item-".concat(id, "\" role=\"option\" tabindex=\"0\" data-drupal-selector=\"ckeditor5-toolbar-button\" data-id=\"").concat(id, "\" data-label=\"").concat(label, "\" data-divider=\"").concat(listType === 'divider', "\">\n        <span class=\"ckeditor5-toolbar-button ckeditor5-toolbar-button-").concat(id, "\">\n          <span class=\"visually-hidden\">").concat(visuallyHiddenLabel, "</span>\n        </span>\n        <span class=\"ckeditor5-toolbar-tooltip\" aria-hidden=\"true\">").concat(label, "</span>\n      </li>\n    ");
   };
 
   Drupal.theme.ckeditor5Admin = function (_ref7) {