diff --git a/karborclient/common/utils.py b/karborclient/common/utils.py
index 997a1f4..0f717ff 100644
--- a/karborclient/common/utils.py
+++ b/karborclient/common/utils.py
@@ -43,7 +43,7 @@ def env(*vars, **kwargs):
     returns the default defined in kwargs.
     """
     for v in vars:
-        value = os.environ.get(v, None)
+        value = os.environ.get(v)
         if value:
             return value
     return kwargs.get('default', '')
diff --git a/karborclient/tests/unit/base.py b/karborclient/tests/unit/base.py
index c41ee62..3ebe613 100644
--- a/karborclient/tests/unit/base.py
+++ b/karborclient/tests/unit/base.py
@@ -44,11 +44,11 @@ class TestResponse(requests.Response):
         self._text = None
         super(TestResponse, self)
         if isinstance(data, dict):
-            self.status_code = data.get('status_code', None)
-            self.headers = data.get('headers', None)
+            self.status_code = data.get('status_code')
+            self.headers = data.get('headers')
             self.reason = data.get('reason', '')
             # Fake the text attribute to streamline Response creation
-            self._text = data.get('text', None)
+            self._text = data.get('text')
         else:
             self.status_code = data
 
diff --git a/karborclient/tests/unit/v1/fakes.py b/karborclient/tests/unit/v1/fakes.py
index 2d56689..4ace4d3 100644
--- a/karborclient/tests/unit/v1/fakes.py
+++ b/karborclient/tests/unit/v1/fakes.py
@@ -82,7 +82,7 @@ class FakeHTTPClient(base_client.HTTPClient):
                                  (method, url, callback))
 
         # Note the call
-        self.callstack.append((method, url, kwargs.get('body', None)))
+        self.callstack.append((method, url, kwargs.get('body')))
         status, headers, body = getattr(self, callback)(**kwargs)
         # add fake request-id header
         headers['x-openstack-request-id'] = REQUEST_ID
diff --git a/karborclient/v1/checkpoints.py b/karborclient/v1/checkpoints.py
index 0c5fe50..be430fe 100644
--- a/karborclient/v1/checkpoints.py
+++ b/karborclient/v1/checkpoints.py
@@ -25,7 +25,7 @@ class Checkpoint(base.Resource):
             return
         plan = self.protection_plan
         if plan is not None:
-            provider_id = plan.get("provider_id", None)
+            provider_id = plan.get("provider_id")
             new = self.manager.get(provider_id, self.id)
             if new:
                 self._add_details(new._info)