diff --git a/include/plugin_api.inc.php b/include/plugin_api.inc.php
index 02fbc00a..ee3e2d27 100644
--- a/include/plugin_api.inc.php
+++ b/include/plugin_api.inc.php
@@ -95,7 +95,8 @@ function errorHandlerCreateDOM(htmlStr) {
 
             case 'backend_save':
             case 'backend_publish':
-                echo '<script>$(document).ready(function() { if(Modernizr.indexeddb) { serendipity.eraseEntryEditorCache(); } });</script>';
+                // this is preview_iframe.tpl updertHooks
+                echo '<script>document.addEventListener("DOMContentLoaded", function() { if (window.parent.Modernizr.indexedDB) { window.parent.serendipity.eraseEntryEditorCache(); } });</script>';
 
         return true;
         break;
diff --git a/templates/2k11/admin/serendipity_editor.js.tpl b/templates/2k11/admin/serendipity_editor.js.tpl
index 927749b9..00edf03e 100644
--- a/templates/2k11/admin/serendipity_editor.js.tpl
+++ b/templates/2k11/admin/serendipity_editor.js.tpl
@@ -727,7 +727,7 @@
 
         serendipity.eraseEntryEditorCache = function() {
             serendipity.cache("serendipity[body]", null);
-            serendipity.cache("serendipity[extended]", null);;
+            serendipity.cache("serendipity[extended]", null);
         }
 
         var indexedDB = window.indexedDB || window.mozIndexedDB || window.webkitIndexedDB || window.msIndexedDB;