diff --git a/lib/timers.js b/lib/timers.js
index e5c0c9eaef746e..72f275a6421e62 100644
--- a/lib/timers.js
+++ b/lib/timers.js
@@ -173,51 +173,41 @@ exports.active = function(item) {
  */
 
 
-exports.setTimeout = function(callback, after, arg1, arg2, arg3) {
-  var timer, i, args;
-  var len = arguments.length;
-
+exports.setTimeout = function(callback, after) {
   after *= 1; // coalesce to number or NaN
 
   if (!(after >= 1 && after <= TIMEOUT_MAX)) {
     after = 1; // schedule on next tick, follows browser behaviour
   }
 
-  timer = new Timeout(after);
-
-  switch (len) {
+  var timer = new Timeout(after);
+  var length = arguments.length;
+  var ontimeout = callback;
+  switch (length) {
     // fast cases
     case 0:
     case 1:
     case 2:
-      timer._onTimeout = callback;
       break;
     case 3:
-      timer._onTimeout = function() {
-        callback.call(timer, arg1);
-      };
+      ontimeout = callback.bind(timer, arguments[2]);
       break;
     case 4:
-      timer._onTimeout = function() {
-        callback.call(timer, arg1, arg2);
-      };
+      ontimeout = callback.bind(timer, arguments[2], arguments[3]);
       break;
     case 5:
-      timer._onTimeout = function() {
-        callback.call(timer, arg1, arg2, arg3);
-      };
+      ontimeout =
+          callback.bind(timer, arguments[2], arguments[3], arguments[4]);
       break;
     // slow case
     default:
-      args = new Array(len - 2);
-      for (i = 2; i < len; i++)
+      var args = new Array(length - 2);
+      for (var i = 2; i < length; i++)
         args[i - 2] = arguments[i];
-
-      timer._onTimeout = function() {
-        callback.apply(timer, args);
-      };
+      ontimeout = callback.apply.bind(callback, timer, args);
       break;
   }
+  timer._onTimeout = ontimeout;
 
   if (process.domain) timer.domain = process.domain;