diff --git a/ceilometer/compute/virt/inspector.py b/ceilometer/compute/virt/inspector.py
index 04e6c35f4..2071819d6 100644
--- a/ceilometer/compute/virt/inspector.py
+++ b/ceilometer/compute/virt/inspector.py
@@ -113,7 +113,7 @@ class InstanceNotFoundException(InspectorException):
 class Inspector(object):
 
     def inspect_instances(self):
-        """List the instances on the current host. """
+        """List the instances on the current host."""
         raise NotImplementedError()
 
     def inspect_cpus(self, instance_name):
diff --git a/ceilometer/image/notifications.py b/ceilometer/image/notifications.py
index eba943bf4..cfee9aab3 100644
--- a/ceilometer/image/notifications.py
+++ b/ceilometer/image/notifications.py
@@ -35,7 +35,7 @@ cfg.CONF.register_opts(OPTS)
 
 
 class ImageBase(plugin.NotificationBase):
-    """Base class for image counting. """
+    """Base class for image counting."""
 
     @staticmethod
     def get_exchange_topics(conf):
diff --git a/ceilometer/storage/impl_hbase.py b/ceilometer/storage/impl_hbase.py
index d16f9e6e8..d7b5d5882 100644
--- a/ceilometer/storage/impl_hbase.py
+++ b/ceilometer/storage/impl_hbase.py
@@ -88,7 +88,7 @@ class Connection(base.Connection):
     """
 
     def __init__(self, conf):
-        """Hbase Connection Initialization"""
+        """Hbase Connection Initialization."""
         opts = self._parse_connection_url(conf.database.connection)
         opts['table_prefix'] = conf.table_prefix
 
diff --git a/tox.ini b/tox.ini
index 7cce351c5..583f7609c 100644
--- a/tox.ini
+++ b/tox.ini
@@ -40,7 +40,7 @@ deps = -r{toxinidir}/requirements.txt
 commands = {posargs}
 
 [flake8]
-ignore = E125,F403,H301,H302,H304,H306,H401,H402
+ignore = E125,F403,H301,H302,H304,H306,H401
 builtins = _
 exclude=.venv,.git,.tox,dist,doc,*openstack/common*,*lib/python*,*egg,tools,nova_tests
 show-source = True