diff --git a/phpgwapi/inc/class.common.inc.php b/phpgwapi/inc/class.common.inc.php
index f86ee5882e..d83e85a229 100644
--- a/phpgwapi/inc/class.common.inc.php
+++ b/phpgwapi/inc/class.common.inc.php
@@ -907,7 +907,7 @@
 			}
  
 			// Clean up mcrypt
-			if (is_object($this->crypto))
+			if (@is_object($this->crypto))
 			{
 				$this->crypto->cleanup();
 				unset($this->crypto);