diff --git a/shadowsocks-csharp/Controller/Service/PACServer.cs b/shadowsocks-csharp/Controller/Service/PACServer.cs
index b53648fc..f1ee3218 100644
--- a/shadowsocks-csharp/Controller/Service/PACServer.cs
+++ b/shadowsocks-csharp/Controller/Service/PACServer.cs
@@ -51,7 +51,7 @@ namespace Shadowsocks.Controller
                 PacSecret = "";
             }
 
-            PacUrl = $"http://{config.LocalHost}:{config.localPort}/pac?t={GetTimestamp(DateTime.Now)}{PacSecret}";
+            PacUrl = $"http://{config.localHost}:{config.localPort}/pac?t={GetTimestamp(DateTime.Now)}{PacSecret}";
         }
 
 
diff --git a/shadowsocks-csharp/Controller/Service/UpdateChecker.cs b/shadowsocks-csharp/Controller/Service/UpdateChecker.cs
index 1e94c571..6cf562a3 100644
--- a/shadowsocks-csharp/Controller/Service/UpdateChecker.cs
+++ b/shadowsocks-csharp/Controller/Service/UpdateChecker.cs
@@ -170,7 +170,7 @@ namespace Shadowsocks.Controller
         {
             WebClient http = new WebClient();
             http.Headers.Add("User-Agent", UserAgent);
-            http.Proxy = new WebProxy(config.LocalHost, config.localPort);
+            http.Proxy = new WebProxy(config.localHost, config.localPort);
             return http;
         }
 
diff --git a/shadowsocks-csharp/Model/Configuration.cs b/shadowsocks-csharp/Model/Configuration.cs
index 08f88fbb..b7e62325 100644
--- a/shadowsocks-csharp/Model/Configuration.cs
+++ b/shadowsocks-csharp/Model/Configuration.cs
@@ -36,8 +36,8 @@ namespace Shadowsocks.Model
         public HotkeyConfig hotkey;
 
         private static string CONFIG_FILE = "gui-config.json";
-
-        public string LocalHost => GetLocalHost();
+        [JsonIgnore]
+        public string localHost => GetLocalHost();
         private string GetLocalHost() {
             return isIPv6Enabled ? "[::1]" : "127.0.0.1";
         }