diff --git a/darwin/modules/networking/dns.nix b/darwin/modules/networking/dns.nix
index b89815e..da21b8a 100644
--- a/darwin/modules/networking/dns.nix
+++ b/darwin/modules/networking/dns.nix
@@ -2,28 +2,36 @@
   lib,
   config,
   ...
-}: {
-  options.myFlake.darwin.networking.dns = lib.mkOption {
-    type = lib.types.enum ["google" "alidns"];
-    default = "google";
-    example = "alidns";
-    description = "Select your DNS provider";
+}: let
+  cfg = config.myFlake.darwin.networking.dns;
+in {
+  options = {
+    myFlake.darwin.networking.dns = {
+      provider = lib.mkOption {
+        type = lib.types.enum ["google" "alidns"];
+        default = "google";
+        example = "alidns";
+        description = "Select desired DNS provider.";
+      };
+    };
   };
 
-  config.networking.dns = lib.mkMerge [
-    (lib.mkIf (config.myFlake.darwin.networking.dns == "google") [
-      ### Google DNS
-      "8.8.8.8"
-      "8.8.4.4"
-      "2001:4860:4860::8888"
-      "2001:4860:4860::8844"
-    ])
-    (lib.mkIf (config.myFlake.darwin.networking.dns == "alidns") [
-      ### AliDNS
-      "223.5.5.5"
-      "223.6.6.6"
-      "2400:3200::1"
-      "2400:3200:baba::1"
-    ])
-  ];
+  config = {
+    networking.dns = lib.mkMerge [
+      (lib.mkIf (cfg.provider == "google") [
+        ### Google DNS
+        "8.8.8.8"
+        "8.8.4.4"
+        "2001:4860:4860::8888"
+        "2001:4860:4860::8844"
+      ])
+      (lib.mkIf (cfg.provider == "alidns") [
+        ### AliDNS
+        "223.5.5.5"
+        "223.6.6.6"
+        "2400:3200::1"
+        "2400:3200:baba::1"
+      ])
+    ];
+  };
 }
diff --git a/nixos/modules/networking/dns.nix b/nixos/modules/networking/dns.nix
index 80824b0..466888d 100644
--- a/nixos/modules/networking/dns.nix
+++ b/nixos/modules/networking/dns.nix
@@ -2,28 +2,36 @@
   lib,
   config,
   ...
-}: {
-  options.myFlake.nixos.networking.dns = lib.mkOption {
-    type = lib.types.enum ["google" "alidns"];
-    default = "google";
-    example = "alidns";
-    description = "Select desired DNS provider.";
+}: let
+  cfg = config.myFlake.nixos.networking.dns;
+in {
+  options = {
+    myFlake.nixos.networking.dns = {
+      provider = lib.mkOption {
+        type = lib.types.enum ["google" "alidns"];
+        default = "google";
+        example = "alidns";
+        description = "Select desired DNS provider.";
+      };
+    };
   };
 
-  config.networking.nameservers = lib.mkMerge [
-    (lib.mkIf (config.myFlake.nixos.networking.dns == "google") [
-      ### Google DNS
-      "8.8.8.8"
-      "8.8.4.4"
-      "2001:4860:4860::8888"
-      "2001:4860:4860::8844"
-    ])
-    (lib.mkIf (config.myFlake.nixos.networking.dns == "alidns") [
-      ### AliDNS
-      "223.5.5.5"
-      "223.6.6.6"
-      "2400:3200::1"
-      "2400:3200:baba::1"
-    ])
-  ];
+  config = {
+    networking.nameservers = lib.mkMerge [
+      (lib.mkIf (cfg.provider == "google") [
+        ### Google DNS
+        "8.8.8.8"
+        "8.8.4.4"
+        "2001:4860:4860::8888"
+        "2001:4860:4860::8844"
+      ])
+      (lib.mkIf (cfg.provider == "alidns") [
+        ### AliDNS
+        "223.5.5.5"
+        "223.6.6.6"
+        "2400:3200::1"
+        "2400:3200:baba::1"
+      ])
+    ];
+  };
 }
diff --git a/users/guanranwang/darwin/profiles/core/default.nix b/users/guanranwang/darwin/profiles/core/default.nix
index fbe3d7d..b8e10ee 100644
--- a/users/guanranwang/darwin/profiles/core/default.nix
+++ b/users/guanranwang/darwin/profiles/core/default.nix
@@ -15,7 +15,7 @@
   };
 
   ### Options
-  myFlake.darwin.networking.dns = lib.mkDefault "alidns";
+  myFlake.darwin.networking.dns.provider = lib.mkDefault "alidns";
   time.timeZone = lib.mkDefault "Asia/Shanghai";
 
   ### Flakes
diff --git a/users/guanranwang/nixos/profiles/core/default.nix b/users/guanranwang/nixos/profiles/core/default.nix
index bf049d9..fd95b15 100644
--- a/users/guanranwang/nixos/profiles/core/default.nix
+++ b/users/guanranwang/nixos/profiles/core/default.nix
@@ -24,7 +24,7 @@
   programs.fish.enable = true;
 
   ### Options
-  myFlake.nixos.networking.dns = lib.mkDefault "alidns";
+  myFlake.nixos.networking.dns.provider = lib.mkDefault "alidns";
   time.timeZone = lib.mkDefault "Asia/Shanghai";
 
   ### Flakes