diff -r 648b35f22b91 Lib/unittest/mock.py
--- a/Lib/unittest/mock.py	Fri Mar 06 12:18:06 2015 +0200
+++ b/Lib/unittest/mock.py	Sat Mar 07 14:01:55 2015 +0200
@@ -1661,7 +1661,7 @@
     "len contains iter "
     "hash str sizeof "
     "enter exit "
-    "divmod neg pos abs invert "
+    "divmod rdivmod neg pos abs invert "
     "complex int float index "
     "trunc floor ceil "
     "bool next "
diff -r 648b35f22b91 Lib/unittest/test/testmock/testmagicmethods.py
--- a/Lib/unittest/test/testmock/testmagicmethods.py	Fri Mar 06 12:18:06 2015 +0200
+++ b/Lib/unittest/test/testmock/testmagicmethods.py	Sat Mar 07 14:01:55 2015 +0200
@@ -423,6 +423,18 @@
         self.assertEqual(list(m), [4, 5, 6])
         self.assertEqual(list(m), [])
 
+    def test_divmod_and_rdivmod(self):
+        m = MagicMock()
+        foo = divmod(2, m)
+        self.assertIsInstance(foo, MagicMock)
+        foo_direct = m.__divmod__(2)
+        self.assertIsInstance(foo_direct, MagicMock)
+        bar = divmod(m, 2)
+        self.assertIsInstance(bar, MagicMock)
+        bar_direct = m.__rdivmod__(2)
+        self.assertIsInstance(bar_direct, MagicMock)
+
+
 
 if __name__ == '__main__':
     unittest.main()