diff --git a/phpgwapi/inc/class.xmlrpcval.inc.php b/phpgwapi/inc/class.xmlrpcval.inc.php
index 0754ed89a0..9b9568dc65 100644
--- a/phpgwapi/inc/class.xmlrpcval.inc.php
+++ b/phpgwapi/inc/class.xmlrpcval.inc.php
@@ -216,7 +216,7 @@
 			reset($ar);
 			list($typ, $val) = each($ar);
 			$rs.='<value>';
-			$rs.=$this->serializedata($typ, $val);
+			$rs.= @$this->serializedata($typ, $val);
 			$rs.='</value>'."\n";
 			return $rs;
 		}