diff --git a/Lib/test/test_collections.py b/Lib/test/test_collections.py
index b108f95..1c49876 100644
--- a/Lib/test/test_collections.py
+++ b/Lib/test/test_collections.py
@@ -795,9 +795,9 @@
         # do not save instance dictionary if not needed
         pairs = [('c', 1), ('b', 2), ('a', 3), ('d', 4), ('e', 5), ('f', 6)]
         od = OrderedDict(pairs)
+        self.assertEqual(len(od.__reduce__()), 2)
         od.x = 10
-        self.assertGreaterEqual(len(od.__reduce__()), 2)
-        self.assertLessEqual(len(od.__reduce__()), 5)
+        self.assertEqual(len(od.__reduce__()), 3)
 
     def test_repr(self):
         od = OrderedDict([('c', 1), ('b', 2), ('a', 3), ('d', 4), ('e', 5), ('f', 6)])