diff --git a/ftplugin/nomsu.vim b/ftplugin/nomsu.vim
index ce5991a..5fe3c6a 100644
--- a/ftplugin/nomsu.vim
+++ b/ftplugin/nomsu.vim
@@ -12,6 +12,9 @@ setlocal iskeyword+=$
 setlocal cpoptions+=M
 setlocal foldmethod=indent
 setlocal formatprg=nomsu\ tools/autoformat.nom\ -
+setlocal expandtab
+setlocal tabstop=4
+setlocal shiftwidth=0
 normal zR
 
 command! NomsuHideTests :g/^\s*test:$/exe "normal! jzc"