diff --git a/workflow/engine/methods/setup/processHeartBeatAjax.php b/workflow/engine/methods/setup/processHeartBeatAjax.php
index 7241e656b..f5cf864ce 100644
--- a/workflow/engine/methods/setup/processHeartBeatAjax.php
+++ b/workflow/engine/methods/setup/processHeartBeatAjax.php
@@ -5,7 +5,7 @@ switch ($_GET['action']) {
         try {
             G::LoadClass( 'serverConfiguration' );
             $oServerConf = & serverConf::getSingleton();
-
+            $response = new stdclass();
             /*you can use SYS_TEMP or SYS_SYS ON HEAR_BEAT_CONF to save for each workspace*/
             $oServerConf->unsetHeartbeatProperty( 'HB_BEAT_TYPE', 'HEART_BEAT_CONF' );
             if (isset( $_POST['acceptHB'] )) {