diff --git a/ftplugin/nomsu.vim b/ftplugin/nomsu.vim
index ccddcd6..465024c 100644
--- a/ftplugin/nomsu.vim
+++ b/ftplugin/nomsu.vim
@@ -15,6 +15,7 @@ setlocal formatprg=nomsu\ -t\ format\ -q\ -
 setlocal expandtab
 setlocal tabstop=4
 setlocal shiftwidth=0
+setlocal commentstring=//\ %s
 normal zR
 
 command! NomsuHideTests :g/^\s*test:$/exe "normal! jzc"