diff --git a/users/rin/zsh.nix b/users/rin/zsh.nix
index c217acb..047bcb2 100644
--- a/users/rin/zsh.nix
+++ b/users/rin/zsh.nix
@@ -1,3 +1,4 @@
+# vim: ft=nix
 { config, pkgs, ... }:
 let
   lib = pkgs.lib;