diff --git a/configuration.nix b/configuration.nix
index f814ded..4910913 100644
--- a/configuration.nix
+++ b/configuration.nix
@@ -185,8 +185,6 @@
   # (e.g. man configuration.nix or on https://nixos.org/nixos/options.html).
   system.stateVersion = "22.05"; # Did you read the comment?
 
-  virtualisation.libvirtd.enable = true;
-  virtualisation.virtualbox.host.enable = true;
   programs.dconf.enable = true;
 
   # vars
diff --git a/user.nix b/user.nix
index 9785f40..14faa35 100644
--- a/user.nix
+++ b/user.nix
@@ -20,7 +20,8 @@ in {
     ];
     packages = with pkgs; [
       # internet
-      firefox-bin
+      firefox
+      firefox-devedition
       ungoogled-chromium
       qutebrowser
       curl