diff --git a/common/config.py b/common/config.py
index 0397953..e0351d5 100644
--- a/common/config.py
+++ b/common/config.py
@@ -68,7 +68,6 @@
                 default=False,
                 help="Set to True if using self-signed SSL certificates."),
     cfg.StrOpt('ca_file',
-               default=None,
                help="CA certificate to pass for servers that have "
                     "https endpoint."),
     cfg.IntOpt('build_interval',
diff --git a/functional/test_resource_group.py b/functional/test_resource_group.py
index 1e9edd5..f1ae923 100644
--- a/functional/test_resource_group.py
+++ b/functional/test_resource_group.py
@@ -48,7 +48,7 @@
     def test_resource_group_zero_novalidate(self):
         # Nested resources should be validated only when size > 0
         # This allows features to be disabled via size=0 without
-        # triggering validation of nested resource custom contraints
+        # triggering validation of nested resource custom constraints
         # e.g images etc in the nested schema.
         nested_template_fail = '''
 heat_template_version: 2013-05-23
diff --git a/scenario/test_volumes.py b/scenario/test_volumes.py
index 7980d81..603c8f2 100644
--- a/scenario/test_volumes.py
+++ b/scenario/test_volumes.py
@@ -77,9 +77,8 @@
                 template_name='test_volumes_create_from_backup.yaml',
                 add_parameters={'backup_id': backup.id})
             stack2 = self.client.stacks.get(stack_identifier2)
-        except exceptions.StackBuildErrorException as e:
-            LOG.error("Halting test due to bug: #1382300")
-            LOG.exception(e)
+        except exceptions.StackBuildErrorException:
+            LOG.exception("Halting test due to bug: #1382300")
             return
 
         # Verify with cinder that the volume exists, with matching details