diff --git a/Lib/test/test_bytes.py b/Lib/test/test_bytes.py
index 16203a5..6a402b1 100644
--- a/Lib/test/test_bytes.py
+++ b/Lib/test/test_bytes.py
@@ -220,8 +220,10 @@
             self.assertRaises(TypeError, lambda: b * 3.14)
             self.assertRaises(TypeError, lambda: 3.14 * b)
             # XXX Shouldn't bytes and bytearray agree on what to raise?
-            self.assertRaises((OverflowError, MemoryError),
-                              lambda: b * sys.maxsize)
+            with self.assertRaises((OverflowError, MemoryError)):
+                c = b * sys.maxsize
+            with self.assertRaises((OverflowError, MemoryError)):
+                b *= sys.maxsize
 
     def test_repeat_1char(self):
         self.assertEqual(self.type2test(b'x')*100, self.type2test([ord('x')]*100))