diff --git a/.vim/vimrc b/.vim/vimrc
index abcba4c..88d14c9 100644
--- a/.vim/vimrc
+++ b/.vim/vimrc
@@ -577,6 +577,10 @@ au BufNewFile,BufRead *.cshtml
     \ setlocal ft=csh tabstop=4 shiftwidth=4 softtabstop=4 noexpandtab autoindent
     \ textwidth=79 fileformat=unix conceallevel=0
 
+augroup line_too_long
+	autocmd!
+	autocmd winEnter,BufEnter * call clearmatches() | call matchadd('ColorColumn', '\%>80v', 100)
+augroup END
 
 augroup async_plug_load
     autocmd!