diff --git a/websocket-sharp/Net/HttpListenerContext.cs b/websocket-sharp/Net/HttpListenerContext.cs
index 1b65d2fe..c8e71a9b 100644
--- a/websocket-sharp/Net/HttpListenerContext.cs
+++ b/websocket-sharp/Net/HttpListenerContext.cs
@@ -240,16 +240,6 @@ namespace WebSocketSharp.Net
       return true;
     }
 
-    internal HttpListenerWebSocketContext GetWebSocketContext ()
-    {
-      if (_websocketContext != null)
-        return _websocketContext;
-
-      _websocketContext = new HttpListenerWebSocketContext (this, null);
-
-      return _websocketContext;
-    }
-
     internal HttpListenerWebSocketContext GetWebSocketContext (string protocol)
     {
       _websocketContext = new HttpListenerWebSocketContext (this, protocol);