diff --git a/templates/simplewiki_edit.html b/templates/simplewiki_edit.html
index 87e53869fa..d5bd22cf8a 100644
--- a/templates/simplewiki_edit.html
+++ b/templates/simplewiki_edit.html
@@ -44,12 +44,12 @@
       //Store the inital contents so we can compare for unsaved changes
       var initial_contents = editor.getValue();
       
-      // window.onbeforeunload = function askConfirm() { //Warn the user before they navigate away
-      //   if ( editor.getValue() != initial_contents ) {
-      //     return "You have made changes to the article that have not been saved yet.";
-      //   }
-      // };
-    
+      window.onbeforeunload = function askConfirm() { //Warn the user before they navigate away
+        if ( editor.getValue() != initial_contents ) {
+          return "You have made changes to the article that have not been saved yet.";
+        }
+      };
+      
       $("#submit_edit").click(function() {
         initial_contents = editor.getValue();
       });