diff --git a/zaza/charm_tests/vault/setup.py b/zaza/charm_tests/vault/setup.py
index 07baa73..24ca9b5 100644
--- a/zaza/charm_tests/vault/setup.py
+++ b/zaza/charm_tests/vault/setup.py
@@ -40,6 +40,12 @@ def basic_setup(cacert=None):
         vault_creds = vault_utils.init_vault(unseal_client)
         vault_utils.store_credentails(vault_creds)
 
+
 def auto_inititialize():
+    """Auto initialize vault for testing.
+
+    In a stack that includes and relies on certificate in vault initialize
+    vault by unsealing and creating a certificate authority.
+    """
     suite = unittest.TestLoader().loadTestsFromTestCase(vault_tests.VaultTest)
-    test_result = unittest.TextTestRunner(verbosity=2).run(suite)
+    unittest.TextTestRunner(verbosity=2).run(suite)
diff --git a/zaza/utilities/openstack.py b/zaza/utilities/openstack.py
index 4eb6a7d..eccd0f6 100644
--- a/zaza/utilities/openstack.py
+++ b/zaza/utilities/openstack.py
@@ -319,7 +319,8 @@ def get_keystone_session(openrc_creds, scope='PROJECT', verify=None):
         if os.path.exists(tmp_file):
             os.chmod(tmp_file, 0o644)
             openrc_creds['OS_CACERT'] = tmp_file
-            keystone_creds['auth_url'] = keystone_creds['auth_url'].replace("http:", "https:")
+            keystone_creds['auth_url'] = (keystone_creds['auth_url']
+                                          .replace("http:", "https:"))
 
     if not verify and openrc_creds.get('OS_CACERT'):
         verify = openrc_creds['OS_CACERT']