diff --git a/Lib/macurl2path.py b/Lib/macurl2path.py
index 65afe69c13a..7d53d624aa7 100644
--- a/Lib/macurl2path.py
+++ b/Lib/macurl2path.py
@@ -1,4 +1,5 @@
-"""Mac specific module for conversion between pathnames and URLs."""
+"""Mac specific module for conversion between pathnames and URLs.
+Do not import directly, use urllib instead."""
 
 import string
 import urllib