diff --git a/workflow/engine/methods/cases/cases_Step.php b/workflow/engine/methods/cases/cases_Step.php
index 709491a00..d92d74842 100644
--- a/workflow/engine/methods/cases/cases_Step.php
+++ b/workflow/engine/methods/cases/cases_Step.php
@@ -71,8 +71,9 @@ if ($delegation->alreadyRouted($_SESSION['APPLICATION'], $_SESSION['INDEX'])) {
         die();
     } else {
         die('<script type="text/javascript">'
-            . 'window.parent.location="casesListExtJs?action=todo";'
-            . '</script>');
+            .'if(window.parent && window.parent.parent){'
+            .'window.parent.parent.postMessage("redirect=todo","*");'
+            .'}</script>');
     }
 }