diff --git a/README.mkd b/README.mkd
index e4f4fe8..6702a6d 100644
--- a/README.mkd
+++ b/README.mkd
@@ -82,6 +82,12 @@ let g:user_emmet_install_global = 0
 autocmd FileType html,css EmmetInstall
 ```
 
+## Redefine trigger key
+
+```vim
+let g:user_emmet_leader_key='<C-Z>'
+```
+
 ## Project Authors
 
 [Yasuhiro Matsumoto](http://mattn.kaoriya.net/)