diff --git a/websocket-sharp/Net/HttpConnection.cs b/websocket-sharp/Net/HttpConnection.cs
index 75f5be9a..d3626073 100644
--- a/websocket-sharp/Net/HttpConnection.cs
+++ b/websocket-sharp/Net/HttpConnection.cs
@@ -63,7 +63,6 @@ namespace WebSocketSharp.Net
     private byte[]                _buffer;
     private static readonly int   _bufferLength;
     private HttpListenerContext   _context;
-    private bool                  _contextRegistered;
     private StringBuilder         _currentLine;
     private InputState            _inputState;
     private RequestStream         _inputStream;
@@ -329,8 +328,6 @@ namespace WebSocketSharp.Net
               return;
             }
 
-            conn._contextRegistered = true;
-
             return;
           }