diff --git a/django/core/handlers/base.py b/django/core/handlers/base.py
index c1403ea4fa..85473a6353 100644
--- a/django/core/handlers/base.py
+++ b/django/core/handlers/base.py
@@ -84,7 +84,11 @@ class BaseHandler(object):
 
             # Complain if the view returned None (a common error).
             if response is None:
-                raise ValueError, "The view %s.%s didn't return an HttpResponse object." % (callback.__module__, callback.func_name)
+                try:
+                    view_name = callback.func_name # If it's a function
+                except AttributeError:
+                    view_name = callback.__class__.__name__ + '.__call__' # If it's a class
+                raise ValueError, "The view %s.%s didn't return an HttpResponse object." % (callback.__module__, view_name)
 
             return response
         except http.Http404, e: