diff --git a/lib/_http_server.js b/lib/_http_server.js
index ca624da36b7258..adf2543cfe0bc5 100644
--- a/lib/_http_server.js
+++ b/lib/_http_server.js
@@ -303,7 +303,6 @@ function Server(options, requestListener) {
 
   this.timeout = 2 * 60 * 1000;
   this.keepAliveTimeout = 5000;
-  this._pendingResponseData = 0;
   this.maxHeadersCount = null;
   this.headersTimeout = 40 * 1000; // 40 seconds
 }