diff --git a/keystoneclient/base.py b/keystoneclient/base.py
index 803df1566..8b3612300 100644
--- a/keystoneclient/base.py
+++ b/keystoneclient/base.py
@@ -15,9 +15,7 @@
 #    License for the specific language governing permissions and limitations
 #    under the License.
 
-"""
-Base utilities to build API operation managers and objects on top of.
-"""
+"""Base utilities to build API operation managers and objects on top of."""
 
 import abc
 import copy
diff --git a/keystoneclient/httpclient.py b/keystoneclient/httpclient.py
index 182ae6298..96f33b028 100644
--- a/keystoneclient/httpclient.py
+++ b/keystoneclient/httpclient.py
@@ -15,9 +15,7 @@
 #    WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. See the
 #    License for the specific language governing permissions and limitations
 #    under the License.
-"""
-OpenStack Client interface. Handles the REST calls and responses.
-"""
+"""OpenStack Client interface. Handles the REST calls and responses."""
 
 import logging
 import warnings
@@ -641,9 +639,7 @@ class HTTPClient(baseclient.Client, base.BaseAuthPlugin):
         return (keyring_key, auth_ref)
 
     def store_auth_ref_into_keyring(self, keyring_key):
-        """Store auth_ref into keyring.
-
-        """
+        """Store auth_ref into keyring."""
         if self.use_keyring:
             try:
                 keyring.set_password("keystoneclient_auth",
diff --git a/tox.ini b/tox.ini
index 9dd66878d..e180fbc36 100644
--- a/tox.ini
+++ b/tox.ini
@@ -46,8 +46,7 @@ passenv = OS_*
 # D103: Missing docstring in public function
 # D104: Missing docstring in public package
 # D105: Missing docstring in magic method
-# D200: One-line docstring should fit on one line with quotes
-ignore = D100,D101,D102,D103,D104,D105,D200
+ignore = D100,D101,D102,D103,D104,D105
 show-source = True
 exclude = .venv,.tox,dist,doc,*egg,build,*openstack/common*