diff --git a/tests/backend_/utils/test_parse_uri.py b/tests/backend_/utils/test_parse_uri.py
index a28983596..c2c015b41 100644
--- a/tests/backend_/utils/test_parse_uri.py
+++ b/tests/backend_/utils/test_parse_uri.py
@@ -91,7 +91,7 @@ def test_test_kwarg(self):
         self.assertEqual(settings_dict["TEST"], {"NAME": "test_db"})
 
     def test_invalid_credentials(self):
-        msg = "The empty string is not valid username."
+        msg = "The empty string is not valid username"
         with self.assertRaisesMessage(pymongo.errors.InvalidURI, msg):
             parse_uri("mongodb://:@localhost")