diff --git a/lib/plugins/extension/helper/extension.php b/lib/plugins/extension/helper/extension.php
index d089245b500e97200db88e49961dad194517478b..719249fbefb0a4f1d44d5d0f229fbb5a468c95d4 100644
--- a/lib/plugins/extension/helper/extension.php
+++ b/lib/plugins/extension/helper/extension.php
@@ -105,7 +105,7 @@ class helper_plugin_extension_extension extends DokuWiki_Plugin {
      */
     public function isBundled() {
         if (!empty($this->remoteInfo['bundled'])) return $this->remoteInfo['bundled'];
-        return in_array($this->base,
+        return in_array($this->id,
                         array(
                             'authad', 'authldap', 'authmysql', 'authpgsql', 'authplain', 'acl', 'info', 'extension',
                             'revert', 'popularity', 'config', 'safefnrecode', 'testing', 'template:dokuwiki'