diff --git a/refstack/tests/unit/test_api_utils.py b/refstack/tests/unit/test_api_utils.py
index 5d249977..1e91b337 100644
--- a/refstack/tests/unit/test_api_utils.py
+++ b/refstack/tests/unit/test_api_utils.py
@@ -390,7 +390,7 @@ class APIUtilsTestCase(base.BaseTestCase):
             ('fake_test', const.USER): 'some_other_user',
             ('fake_test', const.SHARED_TEST_RUN): None,
         }.get(args)
-        self.assertEqual(None, api_utils.get_user_role('fake_test'))
+        self.assertIsNone(api_utils.get_user_role('fake_test'))
         self.assertRaises(exc.HTTPError, api_utils.enforce_permissions,
                           'fake_test', const.ROLE_USER)
         self.assertRaises(exc.HTTPError, api_utils.enforce_permissions,
diff --git a/refstack/tests/unit/test_db.py b/refstack/tests/unit/test_db.py
index 552de813..e8f70a1a 100644
--- a/refstack/tests/unit/test_db.py
+++ b/refstack/tests/unit/test_db.py
@@ -532,7 +532,7 @@ class DBBackendTestCase(base.BaseTestCase):
         # Test no key match.
         filtered.all.return_value = []
         result = api.get_pubkey(key)
-        self.assertEqual(None, result)
+        self.assertIsNone(result)
 
         session.query.assert_called_once_with(mock_model)
         query.filter_by.assert_called_once_with(md5_hash=khash)