diff --git a/workflow/engine/src/ProcessMaker/BusinessModel/ProcessSupervisor.php b/workflow/engine/src/ProcessMaker/BusinessModel/ProcessSupervisor.php
index 8ed7dd426..0ae4d0a06 100644
--- a/workflow/engine/src/ProcessMaker/BusinessModel/ProcessSupervisor.php
+++ b/workflow/engine/src/ProcessMaker/BusinessModel/ProcessSupervisor.php
@@ -162,6 +162,7 @@ class ProcessSupervisor
         try {
             require_once (PATH_RBAC_HOME . "engine" . PATH_SEP . "classes" . PATH_SEP . "model" . PATH_SEP . "Roles.php");
             $aRespLi = array();
+            $aRespLiGroups = array();
             $userRole = new \ProcessMaker\BusinessModel\User();
             // Groups
             $oCriteria = new \Criteria('workflow');