diff --git a/wxPython/wxPython/lib/rightalign.py b/wxPython/wxPython/lib/rightalign.py
index 5c363ef4ac..f4623c4c70 100644
--- a/wxPython/wxPython/lib/rightalign.py
+++ b/wxPython/wxPython/lib/rightalign.py
@@ -28,6 +28,9 @@ Hope this can help someone, as much as this list helps me.
 
 Josu Oyanguren
 Ubera Servicios Informáticos.
+
+
+P.S.  This only works well on wxMSW.
 """
 
 from wxPython.wx import *