diff --git a/vimrc b/vimrc
index c5b8b3a..b41b2c6 100644
--- a/vimrc
+++ b/vimrc
@@ -58,8 +58,10 @@ set tabstop=3
 set softtabstop=3
 set smarttab
 set smartindent
-" show tabs / nbsp / trailing spaces
-"set list listchars=nbsp:▶,tab:··,trail:¤,extends:▶,precedes:◀
+" show tabs / nbsp / spaces
+set listchars=nbsp:▶,tab:··,trail:¤,extends:▶,precedes:◀,space:␣
+   noremap <F6> :set list! list? <CR>
+   inoremap <F6> <C-O>:set list! list? <CR>
 
 set nohlsearch
 set showmatch