diff --git a/gulliver/system/class.g.php b/gulliver/system/class.g.php
index d740a7324..8492723c4 100644
--- a/gulliver/system/class.g.php
+++ b/gulliver/system/class.g.php
@@ -1313,7 +1313,7 @@ $output = $outputHeader.$output;
         print G::trimSourceCodeFile ($filename );
         break;
       default :
-        readfile($filename);
+        @readfile($filename);
     }
   }
 
diff --git a/workflow/engine/classes/class.processes.php b/workflow/engine/classes/class.processes.php
index ef70d4c79..5bc6b3790 100644
--- a/workflow/engine/classes/class.processes.php
+++ b/workflow/engine/classes/class.processes.php
@@ -2557,7 +2557,7 @@ class Processes {
    *        array exist and wich are those, that is the result $sFilteredGroups array.
    */
   function checkExistingGroups( $sGroupList ){
-
+      $aGroupwf  = array();
       $oCriteria = new Criteria('workflow');
       $oCriteria->addSelectColumn(GroupwfPeer::GRP_UID);
       $oCriteria->addSelectColumn(ContentPeer::CON_ID);