diff --git a/Lib/test/test_list.py b/Lib/test/test_list.py
index 9aa6dd10956..2969c6e2f98 100644
--- a/Lib/test/test_list.py
+++ b/Lib/test/test_list.py
@@ -103,7 +103,7 @@ def test_list_resize_overflow(self):
         del lst[1:]
         self.assertEqual(len(lst), 1)
 
-        size = ((2 ** (tuple.__itemsize__ * 8) - 1) // 2)
+        size = sys.maxsize
         with self.assertRaises((MemoryError, OverflowError)):
             lst * size
         with self.assertRaises((MemoryError, OverflowError)):