diff --git a/os/desktop.nix b/os/desktop.nix
index 2708944..8011a2d 100644
--- a/os/desktop.nix
+++ b/os/desktop.nix
@@ -1,7 +1,8 @@
 { pkgs, lib, config, ... }:
 {
   config = lib.mkIf config.frogeye.desktop.xorg {
-    # Enable the X11 windowing system
+    # Control external screen brightness
+    boot.extraModulePackages = with config.boot.kernelPackages; [ ddcci-driver ];
 
     services = {
       blueman.enable = true;