diff --git a/mozilla/mailnews/base/src/nsMessengerWinIntegration.cpp b/mozilla/mailnews/base/src/nsMessengerWinIntegration.cpp
index 880a8fcbf72..6bba3e4576b 100644
--- a/mozilla/mailnews/base/src/nsMessengerWinIntegration.cpp
+++ b/mozilla/mailnews/base/src/nsMessengerWinIntegration.cpp
@@ -484,7 +484,8 @@ nsresult nsMessengerWinIntegration::ShowAlertMessage(const nsAString& aAlertTitl
     {
       rv = alertsService->ShowAlertNotification(NS_LITERAL_STRING(NEW_MAIL_ALERT_ICON), aAlertTitle,
                                                 aAlertText, PR_TRUE,
-                                                NS_ConvertASCIItoUTF16(aFolderURI), this);
+                                                NS_ConvertASCIItoUTF16(aFolderURI), this,
+                                                EmptyString());
       mAlertInProgress = PR_TRUE;
     }
   }