diff --git a/Netch/Forms/SettingForm.Designer.cs b/Netch/Forms/SettingForm.Designer.cs
index ebb88d0a..d6c8d7da 100644
--- a/Netch/Forms/SettingForm.Designer.cs
+++ b/Netch/Forms/SettingForm.Designer.cs
@@ -452,6 +452,7 @@ namespace Netch.Forms
             this.UseCustomDNSCheckBox.TabIndex = 9;
             this.UseCustomDNSCheckBox.Text = "Use Custom DNS";
             this.UseCustomDNSCheckBox.UseVisualStyleBackColor = true;
+            this.UseCustomDNSCheckBox.Click += new System.EventHandler(this.TUNTAPUseCustomDNSCheckBox_CheckedChanged);
             // 
             // TUNTAPDNSLabel
             //