diff --git a/v2rayN/v2rayN/Forms/MainForm.cs b/v2rayN/v2rayN/Forms/MainForm.cs
index 76408d25..a5beb8d7 100644
--- a/v2rayN/v2rayN/Forms/MainForm.cs
+++ b/v2rayN/v2rayN/Forms/MainForm.cs
@@ -1547,7 +1547,7 @@ namespace v2rayN.Forms
 
         private void notifyMain_MouseClick(object sender, MouseEventArgs e)
         {
-            if (e.Button == MouseButtons.Left)
+            if (e.Button == MouseButtons.Middle)
             {
                 if (config.sysProxyType == ESysProxyType.ForcedClear)
                 {