diff --git a/docs/topics/credits.md b/docs/topics/credits.md
index 22d08df7a..8e71c937a 100644
--- a/docs/topics/credits.md
+++ b/docs/topics/credits.md
@@ -59,6 +59,7 @@ The following people have helped make REST framework great.
 * Toni Michel - [tonimichel]
 * Ben Konrath - [benkonrath]
 * Marc Aymerich - [glic3rinu]
+* Ludwig Kraatz - [ludwigkraatz]
 
 Many thanks to everyone who's contributed to the project.
 
@@ -153,3 +154,4 @@ To contact the author directly:
 [tonimichel]: https://github.com/tonimichel
 [benkonrath]: https://github.com/benkonrath
 [glic3rinu]: https://github.com/glic3rinu
+[ludwigkraatz]: https://github.com/ludwigkraatz
diff --git a/rest_framework/mixins.py b/rest_framework/mixins.py
index f6119aa18..089425d55 100644
--- a/rest_framework/mixins.py
+++ b/rest_framework/mixins.py
@@ -24,8 +24,8 @@ class CreateModelMixin(object):
         return Response(serializer.errors, status=status.HTTP_400_BAD_REQUEST)
     
     def get_success_headers(self,data):
-        if "url" in data:
-            return {'Location':data.get("url")}
+        if 'url' in data:
+            return {'Location': data.get('url')}
         else:
             return {}
     
diff --git a/rest_framework/tests/hyperlinkedserializers.py b/rest_framework/tests/hyperlinkedserializers.py
index 5fc935ae4..d7effce70 100644
--- a/rest_framework/tests/hyperlinkedserializers.py
+++ b/rest_framework/tests/hyperlinkedserializers.py
@@ -196,7 +196,7 @@ class TestCreateWithForeignKeys(TestCase):
         request = factory.post('/comments/', data=data)
         response = self.create_view(request).render()
         self.assertEqual(response.status_code, status.HTTP_201_CREATED)
-        self.assertEqual(response["Location"], 'http://testserver/comments/1/')
+        self.assertEqual(response['Location'], 'http://testserver/comments/1/')
         self.assertEqual(self.post.blogpostcomment_set.count(), 1)
         self.assertEqual(self.post.blogpostcomment_set.all()[0].text, 'A test comment')
 
@@ -221,7 +221,7 @@ class TestCreateWithForeignKeysAndCustomSlug(TestCase):
         request = factory.post('/photos/', data=data)
         response = self.list_create_view(request).render()
         self.assertEqual(response.status_code, status.HTTP_201_CREATED)
-        self.assertNotIn("Location", response, msg="Location should only be included if there is a 'url' field on the serializer")
+        self.assertNotIn('Location', response, msg='Location should only be included if there is a "url" field on the serializer')
         self.assertEqual(self.post.photo_set.count(), 1)
         self.assertEqual(self.post.photo_set.all()[0].description, 'A test photo')