diff --git a/Lib/test/test_urllib2.py b/Lib/test/test_urllib2.py
index 46f5da7..3e19ecf 100644
--- a/Lib/test/test_urllib2.py
+++ b/Lib/test/test_urllib2.py
@@ -1461,6 +1461,8 @@
         >>> assert hasattr(err, 'headers')
         >>> err.headers
         'Content-Length: 42'
+        >>> expected_errmsg = 'HTTP Error %s: %s' % (err.code, err.msg)
+        >>> assert str(err) == expected_errmsg
         """
 
 class RequestTests(unittest.TestCase):