diff --git a/src/configurations/nixos/mai/_configuration.nix b/src/configurations/nixos/mai/_configuration.nix
index d3e76e9..5fbf4ce 100644
--- a/src/configurations/nixos/mai/_configuration.nix
+++ b/src/configurations/nixos/mai/_configuration.nix
@@ -45,8 +45,8 @@
   # services.printing.enable = true;
 
   # Enable sound.
-  # sound.enable = true;
-  # hardware.pulseaudio.enable = true;
+  sound.enable = true;
+  hardware.pulseaudio.enable = true;
 
   # Enable touchpad support (enabled default in most desktopManager).
   # services.xserver.libinput.enable = true;
@@ -55,10 +55,6 @@
   users.users.yousiki = {
     isNormalUser = true;
     extraGroups = ["wheel"]; # Enable ‘sudo’ for the user.
-    packages = with pkgs; [
-      firefox
-      tree
-    ];
   };
 
   # List packages installed in system profile. To search, run: