diff --git a/Lib/test/test_descr.py b/Lib/test/test_descr.py
index 79d6c4b..3cb923e 100644
--- a/Lib/test/test_descr.py
+++ b/Lib/test/test_descr.py
@@ -4763,12 +4763,14 @@ class X:
             "elephant"
         X.__doc__ = "banana"
         self.assertEqual(X.__doc__, "banana")
+
         with self.assertRaises(TypeError) as cm:
             type(list).__dict__["__doc__"].__set__(list, "blah")
-        self.assertIn("can't set list.__doc__", str(cm.exception))
+        self.assertIn("cannot set '__doc__' attribute of immutable type 'list'", str(cm.exception))
+
         with self.assertRaises(TypeError) as cm:
             type(X).__dict__["__doc__"].__delete__(X)
-        self.assertIn("can't delete X.__doc__", str(cm.exception))
+        self.assertIn("cannot delete '__doc__' attribute of immutable type 'X'", str(cm.exception))
         self.assertEqual(X.__doc__, "banana")
 
     def test_qualname(self):