diff --git a/.vimrc b/.vimrc
index 51233ac..9e5d61c 100644
--- a/.vimrc
+++ b/.vimrc
@@ -46,6 +46,12 @@ endif
 " command line history
 set history=50
 
+" Check that file have not been changed
+" CursorHold : after cursor move
+" WinEnter or BufWinEnter
+au WinEnter * checktime
+au BufWinEnter * checktime
+
 """""""""
 " INPUT "
 """""""""