diff --git a/vimrc b/vimrc
index 18431ff..63f3039 100644
--- a/vimrc
+++ b/vimrc
@@ -14,6 +14,8 @@ let g:ctrlp_match_window = 'order:ttb,max:20'
 let g:NERDSpaceDelims=1
 let g:gitgutter_enabled = 0
 
+autocmd FileType racket setlocal commentstring=;\ %s
+
 " Use The Silver Searcher https://github.com/ggreer/the_silver_searcher
 if executable('ag')
   " Use Ag over Grep