diff --git a/Netch/Forms/SettingForm.cs b/Netch/Forms/SettingForm.cs
index ee46df37..808d3128 100644
--- a/Netch/Forms/SettingForm.cs
+++ b/Netch/Forms/SettingForm.cs
@@ -211,7 +211,7 @@ namespace Netch.Forms
 
             #region AioDNS
 
-            BindTextBox(AioDNSRulePathTextBox, _ => true, s => Global.Settings.AioDNS.RulePath = s, Global.Settings.AioDNS.RulePath);
+            BindTextBox(AioDNSRulePathTextBox, _ => true, s => { /*Global.Settings.AioDNS.RulePath = s;*/ }, Global.Settings.AioDNS.RulePath);
 
             BindTextBox(ChinaDNSTextBox, _ => true, s => Global.Settings.AioDNS.ChinaDNS = s, Global.Settings.AioDNS.ChinaDNS);
 
diff --git a/Netch/Models/Setting.cs b/Netch/Models/Setting.cs
index 95139145..a8e2eb3c 100644
--- a/Netch/Models/Setting.cs
+++ b/Netch/Models/Setting.cs
@@ -82,7 +82,7 @@ namespace Netch.Models
 
         public ushort ListenPort { get; set; } = 53;
 
-        public string RulePath { get; set; } = "bin\\aiodns.conf";
+        public string RulePath { get; } = "bin\\aiodns.conf";
     }
 
     public class RedirectorConfig