diff --git a/nixos/modules/hardware/nitrokey.nix b/nixos/modules/hardware/nitrokey.nix
index 9bc8da41a4a7..08d6b16790f7 100644
--- a/nixos/modules/hardware/nitrokey.nix
+++ b/nixos/modules/hardware/nitrokey.nix
@@ -1,7 +1,4 @@
 { config, lib, pkgs, ... }:
-
-with lib;
-
 let
 
   cfg = config.hardware.nitrokey;
@@ -10,8 +7,8 @@ in
 
 {
   options.hardware.nitrokey = {
-    enable = mkOption {
-      type = types.bool;
+    enable = lib.mkOption {
+      type = lib.types.bool;
       default = false;
       description = ''
         Enables udev rules for Nitrokey devices. By default grants access
@@ -21,7 +18,7 @@ in
     };
   };
 
-  config = mkIf cfg.enable {
+  config = lib.mkIf cfg.enable {
     services.udev.packages = [ pkgs.libnitrokey ];
   };
 }