diff --git a/felamimail/inc/class.ajaxfelamimail.inc.php b/felamimail/inc/class.ajaxfelamimail.inc.php
index 25f56c45ba..9a6173d9c8 100644
--- a/felamimail/inc/class.ajaxfelamimail.inc.php
+++ b/felamimail/inc/class.ajaxfelamimail.inc.php
@@ -411,7 +411,7 @@
 		function sendNotify ($_uid, $_ret) 
 		{
 			$response = new xajaxResponse();
-			if ($_ret==='true') {
+			if ($_ret==='true' || $_ret===1 || $_ret == "1,") {
 				if ( $this->bofelamimail->sendMDN($_uid) )
 					$this->bofelamimail->flagMessages("mdnsent",array($_uid));
 			} else {