diff --git a/mindplot/src/main/javascript/widget/Menu.js b/mindplot/src/main/javascript/widget/Menu.js
index 7094b235..16cebcde 100644
--- a/mindplot/src/main/javascript/widget/Menu.js
+++ b/mindplot/src/main/javascript/widget/Menu.js
@@ -325,7 +325,7 @@ mindplot.widget.Menu = new Class({
 
             if (!readOnly) {
                 // To prevent the user from leaving the page with changes ...
-                Element.NativeEvents.unload = 2;
+                Element.NativeEvents.unload = 1;
                 $(window).addEvent('unload', function () {
                     if (this.isSaveRequired()) {
                         this.save(saveElem, designer, false, true);