diff --git a/workflow/engine/methods/tasks/tasks_Ajax.php b/workflow/engine/methods/tasks/tasks_Ajax.php
index d4aa963dc..1215d5410 100755
--- a/workflow/engine/methods/tasks/tasks_Ajax.php
+++ b/workflow/engine/methods/tasks/tasks_Ajax.php
@@ -15,12 +15,16 @@ try {
             break;
     }
 
-    //$oJSON = new Services_JSON();  
+    //$oJSON = new Services_JSON();
     $aData = get_object_vars( G::json_decode( $_POST['oData'] ));
     //$aData = get_object_vars( $oJSON->decode( $_POST['oData'] ) );
 
-    $aData["TAS_TITLE"] = str_replace("__ADD__", "+", $aData["TAS_TITLE"]);
-    $aData["TAS_DESCRIPTION"] = str_replace("__ADD__", "+", $aData["TAS_DESCRIPTION"]);
+    if (isset($aData["TAS_TITLE"])) {
+        $aData["TAS_TITLE"] = str_replace("__ADD__", "+", $aData["TAS_TITLE"]);
+    }
+    if (isset($aData["TAS_DESCRIPTION"])) {
+        $aData["TAS_DESCRIPTION"] = str_replace("__ADD__", "+", $aData["TAS_DESCRIPTION"]);
+    }
 
     if (isset( $_POST['function'] )) {
         $sAction = $_POST['function'];