diff --git a/tests/test_auth_plugins.py b/tests/test_auth_plugins.py
index 85d220b25..fae63247b 100644
--- a/tests/test_auth_plugins.py
+++ b/tests/test_auth_plugins.py
@@ -48,7 +48,7 @@ def mock_http_request(resp=None):
                             {
                                 "region": "RegionOne",
                                 "adminURL": "http://localhost:8774/v1.1",
-                                "internalURL":"http://localhost:8774/v1.1",
+                                "internalURL": "http://localhost:8774/v1.1",
                                 "publicURL": "http://localhost:8774/v1.1/",
                             },
                         ],
diff --git a/tests/v1_1/contrib/test_baremetal.py b/tests/v1_1/contrib/test_baremetal.py
index 3bf121ead..6925f18db 100644
--- a/tests/v1_1/contrib/test_baremetal.py
+++ b/tests/v1_1/contrib/test_baremetal.py
@@ -61,5 +61,5 @@ class BaremetalExtensionTest(utils.TestCase):
         cs.assert_called('POST', '/os-baremetal-nodes/1/action')
 
     def test_node_list_interfaces(self):
-        il = cs.baremetal.list_interfaces(1)
+        cs.baremetal.list_interfaces(1)
         cs.assert_called('GET', '/os-baremetal-nodes/1')
diff --git a/tests/v1_1/contrib/test_tenant_networks.py b/tests/v1_1/contrib/test_tenant_networks.py
index a96a83149..a79f76dd1 100644
--- a/tests/v1_1/contrib/test_tenant_networks.py
+++ b/tests/v1_1/contrib/test_tenant_networks.py
@@ -36,7 +36,7 @@ class TenantNetworkExtensionTests(utils.TestCase):
         self.assertTrue(len(nets) > 0)
 
     def test_get_tenant_network(self):
-        net = cs.tenant_networks.get(1)
+        cs.tenant_networks.get(1)
         cs.assert_called('GET', '/os-tenant-networks/1')
 
     def test_create_tenant_networks(self):
diff --git a/tests/v1_1/test_auth.py b/tests/v1_1/test_auth.py
index 85dd4e4de..f5ddf35f8 100644
--- a/tests/v1_1/test_auth.py
+++ b/tests/v1_1/test_auth.py
@@ -125,7 +125,7 @@ class AuthenticateAgainstKeystoneTests(utils.TestCase):
         }
         correct_response = json.dumps(dict_correct_response)
         dict_responses = [
-            {"headers": {'location':'http://127.0.0.1:5001'},
+            {"headers": {'location': 'http://127.0.0.1:5001'},
              "status_code": 305,
              "text": "Use proxy"},
             # Configured on admin port, nova redirects to v2.0 port.
diff --git a/tests/v1_1/utils.py b/tests/v1_1/utils.py
index f878a5e26..eaf108f55 100644
--- a/tests/v1_1/utils.py
+++ b/tests/v1_1/utils.py
@@ -20,7 +20,7 @@ def assert_has_keys(dict, required=[], optional=[]):
     for k in required:
         assert_in(k, keys, "required key %s missing from %s" % (k, dict))
     allowed_keys = set(required) | set(optional)
-    extra_keys = set(keys).difference(set(required + optional))
+    extra_keys = set(keys).difference(allowed_keys)
     if extra_keys:
         fail("found unexpected keys: %s" % list(extra_keys))