diff --git a/modules/communication/communication.model.php b/modules/communication/communication.model.php
index 1c578535c..753bb2132 100644
--- a/modules/communication/communication.model.php
+++ b/modules/communication/communication.model.php
@@ -233,7 +233,7 @@ class communicationModel extends communication
 		return $message;
 	}
 
-	function getNewMessageCount($member_srl)
+	function getNewMessageCount($member_srl = null)
 	{
 		if(!$member_srl)
 		{