diff --git a/configuration.nix b/configuration.nix
index 93f60f6..969933a 100644
--- a/configuration.nix
+++ b/configuration.nix
@@ -10,7 +10,6 @@
       ./hardware-configuration.nix
     ];
 
-  nixpkgs.config.allowUnfree = true;
 
   # Use the GRUB 2 boot loader.
   boot.loader.grub.enable = true;
@@ -22,8 +21,8 @@
 
   networking.hostName = "b85"; # Define your hostname.
   # Pick only one of the below networking options.
-  networking.wireless.enable = true;  # Enables wireless support via wpa_supplicant.
-  # networking.networkmanager.enable = true;  # Easiest to use and most distros use this by default.
+  # networking.wireless.enable = true;  # Enables wireless support via wpa_supplicant.
+  networking.networkmanager.enable = true;  # Easiest to use and most distros use this by default.
 
   # Set your time zone.
   time.timeZone = "Asia/Shanghai";
@@ -167,6 +166,8 @@
   #
   # For more information, see `man configuration.nix` or https://nixos.org/manual/nixos/stable/options#opt-system.stateVersion .
   system.stateVersion = "23.11"; # Did you read the comment?
+
+  nixpkgs.config.allowUnfree = true;
   nix.settings.substituters = [ "https://mirrors.ustc.edu.cn/nix-channels/store" ];
   nixpkgs.config.packageOverrides = pkgs: {
   nur = import (builtins.fetchTarball "https://github.com/nix-community/NUR/archive/master.tar.gz") {