diff --git a/keystonemiddleware/fixture.py b/keystonemiddleware/fixture.py
index a6e921b7..18fbb475 100644
--- a/keystonemiddleware/fixture.py
+++ b/keystonemiddleware/fixture.py
@@ -15,6 +15,7 @@ import uuid
 
 import fixtures
 from keystoneauth1 import fixture as client_fixtures
+from keystoneclient import utils
 from oslo_utils import timeutils
 
 from keystonemiddleware import auth_token
@@ -42,6 +43,7 @@ class AuthTokenFixture(fixtures.Fixture):
     def tokens(self):
         return self._token_data.keys()
 
+    @utils.positional(1)
     def add_token_data(self, token_id=None, expires=None, user_id=None,
                        user_name=None, user_domain_id=None,
                        user_domain_name=None, project_id=None,