diff --git a/BROKEN b/BROKEN
index 034cd851ff0..2967871269c 100644
--- a/BROKEN
+++ b/BROKEN
@@ -1,3 +1,2 @@
     test_bsddb test_bsddb3 test_compile test_dumbdbm
     test_importhooks test_iter test_iterlen test_minidom test_mutants
-    test_os
diff --git a/Lib/test/mapping_tests.py b/Lib/test/mapping_tests.py
index 09e9dcbe421..77d66b20629 100644
--- a/Lib/test/mapping_tests.py
+++ b/Lib/test/mapping_tests.py
@@ -101,7 +101,7 @@ def test_write(self):
         #update
         p.update(self.reference)
         self.assertEqual(dict(p), self.reference)
-        items = p.items()
+        items = list(p.items())
         p = self._empty_mapping()
         p.update(items)
         self.assertEqual(dict(p), self.reference)