diff --git a/mail_notification_custom_subject/tests/test_mail_notification_custom_subject.py b/mail_notification_custom_subject/tests/test_mail_notification_custom_subject.py
index e9a8996..26222b0 100644
--- a/mail_notification_custom_subject/tests/test_mail_notification_custom_subject.py
+++ b/mail_notification_custom_subject/tests/test_mail_notification_custom_subject.py
@@ -140,6 +140,7 @@ class TestMailNotificationCustomSubject(common.TransactionCase):
         self.assertEquals(mail_message_1.subject, "Test and something more")
 
     def test_bad_template_does_not_break(self):
+        """Create template with error (obaject) to test error."""
         self.env["mail.message.custom.subject"].create(
             {
                 "name": "Test bad template 1",