diff --git a/tests/oauth2/rfc6749/endpoints/test_error_responses.py b/tests/oauth2/rfc6749/endpoints/test_error_responses.py
index <HASH>..<HASH> 100644
--- a/tests/oauth2/rfc6749/endpoints/test_error_responses.py
+++ b/tests/oauth2/rfc6749/endpoints/test_error_responses.py
@@ -237,7 +237,6 @@ class ErrorResponseTest(TestCase):
 
     def test_access_denied(self):
         self.validator.authenticate_client.side_effect = self.set_client
-        self.validator.confirm_redirect_uri.return_value = False
         token_uri = 'https://i.b/token'
         # Authorization code grant
         _, body, _ = self.web.create_token_response(token_uri,
confirm_r. is called after auth_client