diff --git a/bundles/icinga2/files/scripts/icinga_notification_wrapper b/bundles/icinga2/files/scripts/icinga_notification_wrapper
index 2741839..612882d 100644
--- a/bundles/icinga2/files/scripts/icinga_notification_wrapper
+++ b/bundles/icinga2/files/scripts/icinga_notification_wrapper
@@ -199,7 +199,7 @@ if __name__ == '__main__':
         notify_per_mail()
 
     if args.sms:
-        if args.service_name:
+        if not args.service_name:
             notify_per_sms()
         if CONFIG['ntfy']['user']:
             notify_per_ntfy()