diff --git a/lib/_http_agent.js b/lib/_http_agent.js
index 351417a7ba6a74..88f4df402a9b80 100644
--- a/lib/_http_agent.js
+++ b/lib/_http_agent.js
@@ -130,13 +130,14 @@ Agent.prototype.getName = function getName(options) {
   return name;
 };
 
-Agent.prototype.addRequest = function addRequest(req, options) {
+Agent.prototype.addRequest = function addRequest(req, options, port/*legacy*/,
+                                                 localAddress/*legacy*/) {
   // Legacy API: addRequest(req, host, port, localAddress)
   if (typeof options === 'string') {
     options = {
       host: options,
-      port: arguments[2],
-      localAddress: arguments[3]
+      port,
+      localAddress
     };
   }
 
diff --git a/lib/_http_client.js b/lib/_http_client.js
index 42387d0930b583..e1f064e832d224 100644
--- a/lib/_http_client.js
+++ b/lib/_http_client.js
@@ -127,8 +127,8 @@ function ClientRequest(options, cb) {
                     'Expected "' + expectedProtocol + '"');
   }
 
-  const defaultPort = options.defaultPort ||
-                      this.agent && this.agent.defaultPort;
+  var defaultPort = options.defaultPort ||
+                    this.agent && this.agent.defaultPort;
 
   var port = options.port = options.port || defaultPort || 80;
   var host = options.host = validateHost(options.hostname, 'hostname') ||
@@ -226,7 +226,7 @@ function ClientRequest(options, cb) {
 
   var called = false;
 
-  const oncreate = (err, socket) => {
+  var oncreate = (err, socket) => {
     if (called)
       return;
     called = true;
@@ -238,14 +238,15 @@ function ClientRequest(options, cb) {
     this._deferToConnect(null, null, () => this._flush());
   };
 
+  var newSocket;
   if (this.socketPath) {
     this._last = true;
     this.shouldKeepAlive = false;
-    const optionsPath = {
+    var optionsPath = {
       path: this.socketPath,
       timeout: this.timeout
     };
-    const newSocket = this.agent.createConnection(optionsPath, oncreate);
+    newSocket = this.agent.createConnection(optionsPath, oncreate);
     if (newSocket && !called) {
       called = true;
       this.onSocket(newSocket);
@@ -270,7 +271,7 @@ function ClientRequest(options, cb) {
     this._last = true;
     this.shouldKeepAlive = false;
     if (typeof options.createConnection === 'function') {
-      const newSocket = options.createConnection(options, oncreate);
+      newSocket = options.createConnection(options, oncreate);
       if (newSocket && !called) {
         called = true;
         this.onSocket(newSocket);