diff --git a/plugin/sensible.vim b/plugin/sensible.vim
index 5d1d867..129c5ec 100644
--- a/plugin/sensible.vim
+++ b/plugin/sensible.vim
@@ -54,7 +54,7 @@ endif
 
 set autoread
 set autowrite
-set fileformats=unix,dos,mac
+set fileformats+=mac
 
 set viminfo^=!