diff --git a/benchmark/net/net-c2s-cork.js b/benchmark/net/net-c2s-cork.js
index 60b4542a47b1c0..5e8dd349d68979 100644
--- a/benchmark/net/net-c2s-cork.js
+++ b/benchmark/net/net-c2s-cork.js
@@ -62,6 +62,7 @@ Writer.prototype.write = function(chunk, encoding, cb) {
 Writer.prototype.on = function() {};
 Writer.prototype.once = function() {};
 Writer.prototype.emit = function() {};
+Writer.prototype.prependListener = function() {};
 
 function server() {
   var writer = new Writer();
diff --git a/benchmark/net/net-c2s.js b/benchmark/net/net-c2s.js
index d64a5517e8f8c7..2c3bbe3c6a18cd 100644
--- a/benchmark/net/net-c2s.js
+++ b/benchmark/net/net-c2s.js
@@ -62,6 +62,7 @@ Writer.prototype.write = function(chunk, encoding, cb) {
 Writer.prototype.on = function() {};
 Writer.prototype.once = function() {};
 Writer.prototype.emit = function() {};
+Writer.prototype.prependListener = function() {};
 
 
 function Reader() {
diff --git a/benchmark/net/net-pipe.js b/benchmark/net/net-pipe.js
index b6e95a8b75daa0..fd3a6d4f4334b8 100644
--- a/benchmark/net/net-pipe.js
+++ b/benchmark/net/net-pipe.js
@@ -62,6 +62,7 @@ Writer.prototype.write = function(chunk, encoding, cb) {
 Writer.prototype.on = function() {};
 Writer.prototype.once = function() {};
 Writer.prototype.emit = function() {};
+Writer.prototype.prependListener = function() {};
 
 
 function Reader() {
diff --git a/benchmark/net/net-s2c.js b/benchmark/net/net-s2c.js
index 2ef151f4ca46b3..fc3f3e13894d3c 100644
--- a/benchmark/net/net-s2c.js
+++ b/benchmark/net/net-s2c.js
@@ -62,6 +62,7 @@ Writer.prototype.write = function(chunk, encoding, cb) {
 Writer.prototype.on = function() {};
 Writer.prototype.once = function() {};
 Writer.prototype.emit = function() {};
+Writer.prototype.prependListener = function() {};
 
 
 function Reader() {