diff --git a/lib/node-http-proxy/http-proxy.js b/lib/node-http-proxy/http-proxy.js
index 7458b61..5ec206e 100644
--- a/lib/node-http-proxy/http-proxy.js
+++ b/lib/node-http-proxy/http-proxy.js
@@ -680,7 +680,7 @@ HttpProxy.prototype.proxyWebSocketRequest = function (req, socket, head, buffer)
       socket.destroy();
     });
 
-    self.emit('webSocketProxyError', req, socket, head);
+    self.emit('webSocketProxyError', err, req, socket, head);
   }
 
   //