diff --git a/flake.nix b/flake.nix
index 70ad213..4b5e8ad 100644
--- a/flake.nix
+++ b/flake.nix
@@ -23,7 +23,7 @@
     )
     // {
       nixosModules = {
-        night-light = import ./module.nix;
+        night-light = import ./module.nix self;
       };
     };
 }
diff --git a/module.nix b/module.nix
index e1a8edf..3ffba08 100644
--- a/module.nix
+++ b/module.nix
@@ -1,3 +1,4 @@
+self:
 {
   config,
   lib,
@@ -7,8 +8,8 @@
 
 with lib;
 let
+  inherit (pkgs.stdenv.hostPlatform) system;
   cfg = config.services.nightLight;
-  pkg = pkgs.callPackage ./default.nix { };
 in
 {
   options.services.nightLight = {
@@ -29,7 +30,7 @@ in
       after = [ "network.target" ];
 
       serviceConfig = {
-        ExecStart = "${pkg}/bin/NightLight";
+        ExecStart = "${self.packages.${system}.default}/bin/NightLight";
         Restart = "on-failure";
         User = "night-light";
         Group = "night-light";