diff --git a/workflow/engine/src/BusinessModel/Task.php b/workflow/engine/src/BusinessModel/Task.php
index ba90062b4..d4dc313b9 100644
--- a/workflow/engine/src/BusinessModel/Task.php
+++ b/workflow/engine/src/BusinessModel/Task.php
@@ -984,6 +984,9 @@ class Task
     public function getTaskAssignee($sProcessUID, $sTaskUID, $sAssigneeUID)
     {
         try {
+            $filter = '';
+            $start = null;
+            $limit = null;
             $oProcess = \ProcessPeer::retrieveByPK( $sProcessUID );
             if (is_null($oProcess)) {
                 throw (new \Exception( 'This id for `prj_uid`: '. $sProcessUID .' do not correspond to a registered process'));
@@ -1530,6 +1533,9 @@ class Task
     public function getTaskAdhocAssignee($sProcessUID, $sTaskUID, $sAssigneeUID)
     {
         try {
+            $filter = '';
+            $start = null;
+            $limit = null;
             $oProcess = \ProcessPeer::retrieveByPK( $sProcessUID );
             if (is_null($oProcess)) {
                 throw (new \Exception( 'This id for `prj_uid`: '. $sProcessUID .' do not correspond to a registered process'));
diff --git a/workflow/engine/src/BusinessModel/User.php b/workflow/engine/src/BusinessModel/User.php
index 15f7d014e..ff1fc67f7 100644
--- a/workflow/engine/src/BusinessModel/User.php
+++ b/workflow/engine/src/BusinessModel/User.php
@@ -649,6 +649,7 @@ class User
     public function getUsers($filter, $start, $limit)
     {
         try {
+            $aUserInfo = array();
             require_once (PATH_TRUNK . "workflow" . PATH_SEP . "engine" . PATH_SEP . "classes" . PATH_SEP . "model" . PATH_SEP . "Users.php");
             $oCriteria = new \Criteria();
             if ($filter != '') {
@@ -696,6 +697,7 @@ class User
     public function getUser($userUid)
     {
         try {
+            $aUserInfo = array();
             $oUser = \UsersPeer::retrieveByPK($userUid);
             if (is_null($oUser)) {
                 throw (new \Exception( 'This id for `usr_uid`: '. $userUid .' do not correspond to a registered user'));