diff --git a/Netch/Forms/SettingForm.Designer.cs b/Netch/Forms/SettingForm.Designer.cs
index 4b20309c..300b3bde 100644
--- a/Netch/Forms/SettingForm.Designer.cs
+++ b/Netch/Forms/SettingForm.Designer.cs
@@ -595,7 +595,6 @@ namespace Netch.Forms
             // 
             // ProxyDNSCheckBox
             // 
-            this.ProxyDNSCheckBox.DataBindings.Add(new System.Windows.Forms.Binding("Enabled", this.UseCustomDNSCheckBox, "Checked", true));;
             this.ProxyDNSCheckBox.AutoSize = true;
             this.ProxyDNSCheckBox.Location = new System.Drawing.Point(261, 139);
             this.ProxyDNSCheckBox.Name = "ProxyDNSCheckBox";
diff --git a/Netch/Forms/SettingForm.cs b/Netch/Forms/SettingForm.cs
index c7f33c77..b6ac08c4 100644
--- a/Netch/Forms/SettingForm.cs
+++ b/Netch/Forms/SettingForm.cs
@@ -206,10 +206,7 @@ namespace Netch.Forms
             if (UseCustomDNSCheckBox.Checked)
                 TUNTAPDNSTextBox.Text = Global.Settings.TUNTAP.DNS.Any() ? DnsUtils.Join(Global.Settings.TUNTAP.DNS) : "1.1.1.1";
             else
-            {
                 TUNTAPDNSTextBox.Text = "AioDNS";
-                ProxyDNSCheckBox.Checked = false;
-            }
         }
 
         private void InitSTUN()