diff --git a/docs/topics/release-notes.md b/docs/topics/release-notes.md
index 87aaefbdb..c75f08790 100644
--- a/docs/topics/release-notes.md
+++ b/docs/topics/release-notes.md
@@ -8,6 +8,7 @@
 
 ### Master
 
+* Bugfix: Fix exception in browseable API on DELETE.
 * Bugfix: Fix issue where pk was was being set to a string if set by URL kwarg.
 
 ### 2.1.11
diff --git a/rest_framework/mixins.py b/rest_framework/mixins.py
index 8dc0c3295..2700606d0 100644
--- a/rest_framework/mixins.py
+++ b/rest_framework/mixins.py
@@ -124,6 +124,6 @@ class DestroyModelMixin(object):
     Should be mixed in with `SingleObjectBaseView`.
     """
     def destroy(self, request, *args, **kwargs):
-        self.object = self.get_object()
-        self.object.delete()
+        obj = self.get_object()
+        obj.delete()
         return Response(status=status.HTTP_204_NO_CONTENT)
diff --git a/rest_framework/tests/renderers.py b/rest_framework/tests/renderers.py
index 9be4b1146..fb843676c 100644
--- a/rest_framework/tests/renderers.py
+++ b/rest_framework/tests/renderers.py
@@ -444,19 +444,19 @@ class CacheRenderTest(TestCase):
             return
         if state == None:
             return
-        if isinstance(state,tuple):
-            if not isinstance(state[0],dict):
-                state=state[1]
+        if isinstance(state, tuple):
+            if not isinstance(state[0], dict):
+                state = state[1]
             else:
-                state=state[0].update(state[1])
+                state = state[0].update(state[1])
         result = {}
         for i in state:
             try:
-                pickle.dumps(state[i],protocol=2)
+                pickle.dumps(state[i], protocol=2)
             except pickle.PicklingError:
                 if not state[i] in seen:
                     seen.append(state[i])
-                    result[i] = cls._get_pickling_errors(state[i],seen)
+                    result[i] = cls._get_pickling_errors(state[i], seen)
         return result
 
     def http_resp(self, http_method, url):