diff --git a/after/ftplugin/markdown.vim b/after/ftplugin/markdown.vim
index 0ab18e5..e42b623 100644
--- a/after/ftplugin/markdown.vim
+++ b/after/ftplugin/markdown.vim
@@ -1,6 +1,5 @@
 setlocal wrap
 setlocal colorcolumn=
 setlocal tabstop=2
-setlocal shiftwidth=2
 
 nnoremap <buffer> <cr> <cmd>Markview toggle<cr>
diff --git a/after/ftplugin/nix.vim b/after/ftplugin/nix.vim
new file mode 100644
index 0000000..46cf568
--- /dev/null
+++ b/after/ftplugin/nix.vim
@@ -0,0 +1 @@
+setlocal tabstop=2