diff --git a/websocket-sharp/Net/WebSockets/HttpListenerWebSocketContext.cs b/websocket-sharp/Net/WebSockets/HttpListenerWebSocketContext.cs
index f4fa491b..e4d0baf2 100644
--- a/websocket-sharp/Net/WebSockets/HttpListenerWebSocketContext.cs
+++ b/websocket-sharp/Net/WebSockets/HttpListenerWebSocketContext.cs
@@ -107,7 +107,7 @@ namespace WebSocketSharp.Net.WebSockets
     /// </value>
     public override string Host {
       get {
-        return _context.Request.Headers["Host"];
+        return _context.Request.UserHostName;
       }
     }