diff --git a/v2rayN/v2rayN/Base/HttpWebServerB.cs b/v2rayN/v2rayN/Base/HttpWebServerB.cs
index 73e596d1..a440efec 100644
--- a/v2rayN/v2rayN/Base/HttpWebServerB.cs
+++ b/v2rayN/v2rayN/Base/HttpWebServerB.cs
@@ -41,6 +41,7 @@ namespace v2rayN.Base
             {
                 if (!listener.Pending())
                 {
+                    Thread.Sleep(100);
                     continue;
                 }