diff --git a/channels/h323/ast_h323.cpp b/channels/h323/ast_h323.cpp
index 9f6f7f9ae7..7f50b3613d 100755
--- a/channels/h323/ast_h323.cpp
+++ b/channels/h323/ast_h323.cpp
@@ -205,7 +205,7 @@ int MyH323EndPoint::MakeCall(const PString & dest, PString & token,
 	
 	*callReference = connection->GetCallReference();
 	
-	if (strlen(callerid))
+	if (callerid)
 		connection->SetLocalPartyName(PString(callerid));
 
 	connection->Unlock();