diff --git a/websocket-sharp/Net/HttpListener.cs b/websocket-sharp/Net/HttpListener.cs
index 5ced2f7f..f307ce4c 100644
--- a/websocket-sharp/Net/HttpListener.cs
+++ b/websocket-sharp/Net/HttpListener.cs
@@ -631,12 +631,6 @@ namespace WebSocketSharp.Net
     {
       lock (_ctxRegistrySync)
         _ctxRegistry.Remove (context);
-
-      lock (_ctxQueueSync) {
-        var idx = _ctxQueue.IndexOf (context);
-        if (idx >= 0)
-          _ctxQueue.RemoveAt (idx);
-      }
     }
 
     #endregion