diff --git a/websocket-sharp/Net/HttpListener.cs b/websocket-sharp/Net/HttpListener.cs
index 6f0e0939..1c472a40 100644
--- a/websocket-sharp/Net/HttpListener.cs
+++ b/websocket-sharp/Net/HttpListener.cs
@@ -669,7 +669,7 @@ namespace WebSocketSharp.Net
         }
         else {
           var ares = _waitQueue.Dequeue ();
-          ares.Complete (context);
+          ares.Complete (context, false);
         }
 
         return true;