diff --git a/runtime/doc/gui_mac.txt b/runtime/doc/gui_mac.txt
index 24e5742d42..b625e9164e 100644
--- a/runtime/doc/gui_mac.txt
+++ b/runtime/doc/gui_mac.txt
@@ -124,7 +124,7 @@ strings like "((3) of 2)" to appear in the window title.
 
 							*macvim-options*
 These are the non-standard options that MacVim supports:
-	'fullscreen' 'fuoptions' 'toolbariconsize' 'transparency'
+	'fullscreen' 'fuoptions' 'toolbariconsize' 'transparency' 'antialias'
 
 							*macvim-find*
 Whenever you search for something in Vim (e.g. using "/") the search query is