diff --git a/PIL/ImageGrab.py b/PIL/ImageGrab.py
index c1306d611..febdb2310 100644
--- a/PIL/ImageGrab.py
+++ b/PIL/ImageGrab.py
@@ -2,7 +2,7 @@
 # The Python Imaging Library
 # $Id$
 #
-# screen grabber (windows only)
+# screen grabber (OS X and Windows only)
 #
 # History:
 # 2001-04-26 fl  created