diff --git a/lib/_http_server.js b/lib/_http_server.js
index 53bf30b3d240a3..25917532e6fca6 100644
--- a/lib/_http_server.js
+++ b/lib/_http_server.js
@@ -307,7 +307,6 @@ function Server(options, requestListener) {
 
   this.timeout = 2 * 60 * 1000;
   this.keepAliveTimeout = 5000;
-  this._pendingResponseData = 0;
   this.maxHeadersCount = null;
   this.headersTimeout = 40 * 1000; // 40 seconds
 }