diff --git a/plugin/vimux.vim b/plugin/vimux.vim
index 87d0af1..9de4f2f 100644
--- a/plugin/vimux.vim
+++ b/plugin/vimux.vim
@@ -1,4 +1,4 @@
-if exists('g:loaded_vimux') || &cp
+if exists('g:loaded_vimux') || &compatible
   finish
 endif
 let g:loaded_vimux = 1