diff --git a/workflow/engine/methods/appFolder/appFolderAjax.php b/workflow/engine/methods/appFolder/appFolderAjax.php
index a6b1ac66c..46e71cc92 100644
--- a/workflow/engine/methods/appFolder/appFolderAjax.php
+++ b/workflow/engine/methods/appFolder/appFolderAjax.php
@@ -183,6 +183,7 @@ function sendJsonResultGeneric($response, $callback)
 function expandNode()
 {
     extract(getExtJSParams());
+    $search = isset($_REQUEST['search']) ? $_REQUEST['search'] : null;
     $pmFolder = new AppFolder();
     $rootFolder = "/";