diff --git a/django/core/urlresolvers.py b/django/core/urlresolvers.py
index cad57a5..8ecec94 100644
--- a/django/core/urlresolvers.py
+++ b/django/core/urlresolvers.py
@@ -183,7 +183,8 @@ class RegexURLResolver(object):
             else:
                 bits = normalize(p_pattern)
                 lookups.appendlist(pattern.callback, (bits, p_pattern))
-                lookups.appendlist(pattern.name, (bits, p_pattern))
+                if pattern.name is not None:
+                    lookups.appendlist(pattern.name, (bits, p_pattern))
         self._reverse_dict = lookups
         self._namespace_dict = namespaces
         self._app_dict = apps
diff --git a/tests/regressiontests/urlpatterns_reverse/tests.py b/tests/regressiontests/urlpatterns_reverse/tests.py
index 3fcc935..98fc61f 100644
--- a/tests/regressiontests/urlpatterns_reverse/tests.py
+++ b/tests/regressiontests/urlpatterns_reverse/tests.py
@@ -118,6 +118,11 @@ class URLPatternReverse(TestCase):
                 self.assertEqual(expected, NoReverseMatch)
             else:
                 self.assertEquals(got, expected)
+    
+    def test_reverse_none(self):
+        # Reversing None should raise an error, not return the last un-named
+        # view.
+        self.assertRaises(NoReverseMatch, reverse, None)
 
 class ResolverTests(unittest.TestCase):
     def test_non_regex(self):