diff --git a/hosts/box/default.nix b/hosts/box/default.nix
index fb954ba..3917b20 100644
--- a/hosts/box/default.nix
+++ b/hosts/box/default.nix
@@ -15,7 +15,7 @@
   ];
   users.users.boxuser = {
     isNormalUser = true;
-    groups = ["wheel" "docker" "networkmanager"]; # Enable ‘sudo’ for the user.
+    extraGroups = ["wheel" "docker" "networkmanager"]; # Enable ‘sudo’ for the user.
     password = "boxuser";
     packages = with pkgs; [
       fastfetch