diff --git a/doc/source/_exts/candidates.py b/doc/source/_exts/candidates.py
index 352c7285..1d88ede6 100644
--- a/doc/source/_exts/candidates.py
+++ b/doc/source/_exts/candidates.py
@@ -10,21 +10,21 @@
 #    License for the specific language governing permissions and limitations
 #    under the License.
 
-"""Build candidates list
-"""
+"""Build candidates list"""
 
-import jinja2
-import jinja2.environment
 import os
 import yaml
 
 from docutils import nodes
 from docutils.parsers.rst import Directive
 from docutils.statemachine import ViewList
-from openstack_election import utils
+import jinja2
+import jinja2.environment
 from sphinx.util import logging
 from sphinx.util.nodes import nested_parse_with_titles
 
+from openstack_election import utils
+
 LOG = logging.getLogger(__name__)
 
 
@@ -144,7 +144,7 @@ class CandidatesDirective(Directive):
 
 
 def setup(app):
-    app.info('loading candidates extension')
+    LOG.info('loading candidates extension')
     app.connect('builder-inited', build_lists)
     app.add_directive('candidates', CandidatesDirective)
     return {'version': '0.1'}
diff --git a/doc/source/_exts/configuration.py b/doc/source/_exts/configuration.py
index f2afaa0a..d6deb09b 100644
--- a/doc/source/_exts/configuration.py
+++ b/doc/source/_exts/configuration.py
@@ -10,15 +10,18 @@
 #    License for the specific language governing permissions and limitations
 #    under the License.
 
-"""Build configuration substitution
-"""
+"""Build configuration substitution"""
+
+import os
 
 import jinja2
 import jinja2.environment
-import os
+from sphinx.util import logging
 
 from openstack_election.utils import conf
 
+LOG = logging.getLogger(__name__)
+
 
 def build_configuration(app):
     output_file = os.path.join(".", "doc", "source", "configuration.rst")
@@ -31,5 +34,5 @@ def build_configuration(app):
 
 
 def setup(app):
-    app.info('loading configuration extension')
+    LOG.info('loading configuration extension')
     app.connect('builder-inited', build_configuration)
diff --git a/doc/source/_exts/events.py b/doc/source/_exts/events.py
index cd6b3932..3f71e685 100644
--- a/doc/source/_exts/events.py
+++ b/doc/source/_exts/events.py
@@ -10,15 +10,18 @@
 #    License for the specific language governing permissions and limitations
 #    under the License.
 
-"""Add election timer data
-"""
+"""Add election timer data"""
+
+import os
 
 import jinja2
 import jinja2.environment
-import os
+from sphinx.util import logging
 
 from openstack_election import utils
 
+LOG = logging.getLogger(__name__)
+
 
 def build_timer(app):
     app.add_javascript("event_timer.js")
@@ -32,5 +35,5 @@ def build_timer(app):
 
 
 def setup(app):
-    app.info('loading events_timer extension')
+    LOG.info('loading events_timer extension')
     app.connect('builder-inited', build_timer)