diff --git a/ironic/nova/tests/virt/ironic/test_driver.py b/ironic/nova/tests/virt/ironic/test_driver.py
index c337c74740..6d7ae85dbf 100644
--- a/ironic/nova/tests/virt/ironic/test_driver.py
+++ b/ironic/nova/tests/virt/ironic/test_driver.py
@@ -122,6 +122,7 @@ class FakeNodeClient(object):
 
 
 class FakeClient(object):
+
     node = FakeNodeClient()
     port = FakePortClient()
 
@@ -157,12 +158,6 @@ class IronicDriverTestCase(test.NoDBTestCase):
     def test_get_hypervisor_version(self):
         self.assertEqual(self.driver.get_hypervisor_version(), 1)
 
-    def test__require_node(self):
-        node_uuid = '1b67c895-9ef8-42ac-a59c-7bf84fe24e82'
-        test_instance = fake_instance.fake_instance_obj(self.ctx,
-                                                        node=node_uuid)
-        self.assertEqual(self.driver._require_node(test_instance), node_uuid)
-
     def test__get_client_no_context(self):
         # stop _get_client mock
         self.mock_cli_patcher.stop()
diff --git a/ironic/nova/virt/ironic/driver.py b/ironic/nova/virt/ironic/driver.py
index f02b232978..c853527400 100644
--- a/ironic/nova/virt/ironic/driver.py
+++ b/ironic/nova/virt/ironic/driver.py
@@ -120,6 +120,7 @@ def _get_nodes_supported_instances(cpu_arch=''):
     """Return supported instances for a node."""
     return [(cpu_arch, 'baremetal', 'baremetal')]
 
+
 class IronicDriver(virt_driver.ComputeDriver):
     """Hypervisor driver for Ironic - bare metal provisioning."""
 
@@ -131,7 +132,8 @@ class IronicDriver(virt_driver.ComputeDriver):
         self.firewall_driver = firewall.load_driver(default=_FIREWALL_DRIVER)
         # TODO(deva): sort out extra_specs and nova-scheduler interaction
         extra_specs = {}
-        extra_specs["ironic_driver"] = "ironic.nova.virt.ironic.driver.IronicDriver"
+        extra_specs["ironic_driver"] = \
+                "ironic.nova.virt.ironic.driver.IronicDriver"
         # cpu_arch set per node.
         extra_specs['cpu_arch'] = ''
         for pair in CONF.ironic.instance_type_extra_specs:
@@ -461,7 +463,6 @@ class IronicDriver(virt_driver.ComputeDriver):
         # TODO(lucasagomes): Make the time configurable
         timer.start(interval=10).wait()
 
-
     def destroy(self, context, instance, network_info,
                 block_device_info=None):
 
diff --git a/tox.ini b/tox.ini
index aaaf9e284a..aa5e070d69 100644
--- a/tox.ini
+++ b/tox.ini
@@ -33,7 +33,7 @@ commands = {posargs}
 
 ignore = E12,E711
 builtins = _
-exclude =  .venv,.git,.tox,dist,doc,*openstack/common*,*lib/python*,*egg,build,*ironic/nova*,tools
+exclude =  .venv,.git,.tox,dist,doc,*openstack/common*,*lib/python*,*egg,build,tools
 
 [hacking]
 import_exceptions = ironic.openstack.common.gettextutils._,testtools.matchers