diff -r ed011b0d7daf Lib/test/test_memoryview.py
--- a/Lib/test/test_memoryview.py	Sun Sep 22 16:18:19 2013 -0700
+++ b/Lib/test/test_memoryview.py	Mon Sep 23 19:20:40 2013 +0300
@@ -352,6 +352,15 @@
             self.assertIs(wr(), None)
             self.assertIs(L[0], b)
 
+    def test_reversed(self):
+        for tp in self._types:
+            b = tp(self._source)
+            m = self._view(b)
+            aslist = list(reversed(m.tolist()))
+            self.assertEqual(list(reversed(m)), aslist)
+            self.assertEqual(list(reversed(m)), list(m[::-1]))
+
+
 # Variations on source objects for the buffer: bytes-like objects, then arrays
 # with itemsize > 1.
 # NOTE: support for multi-dimensional objects is unimplemented.
diff -r ed011b0d7daf Objects/memoryobject.c
--- a/Objects/memoryobject.c	Sun Sep 22 16:18:19 2013 -0700
+++ b/Objects/memoryobject.c	Mon Sep 23 19:20:40 2013 +0300
@@ -2402,7 +2402,7 @@
 
 /* As sequence */
 static PySequenceMethods memory_as_sequence = {
-        0,                                /* sq_length */
+        (lenfunc)memory_length,           /* sq_length */
         0,                                /* sq_concat */
         0,                                /* sq_repeat */
         (ssizeargfunc)memory_item,        /* sq_item */