diff --git a/src/vendor/raf-polyfill.js b/src/vendor/raf-polyfill.js
index 726985cdf..5432f59f9 100644
--- a/src/vendor/raf-polyfill.js
+++ b/src/vendor/raf-polyfill.js
@@ -10,24 +10,25 @@ var isWindowAvailable = typeof window !== 'undefined'
 isWindowAvailable && (function() {
     var lastTime = 0;
     var vendors = ['ms', 'moz', 'webkit', 'o'];
+
     for(var x = 0; x < vendors.length && !window.requestAnimationFrame; ++x) {
-        window.requestAnimationFrame = window[vendors[x]+'RequestAnimationFrame'];
-        window.cancelAnimationFrame = window[vendors[x]+'CancelAnimationFrame']
-                                   || window[vendors[x]+'CancelRequestAnimationFrame'];
+      window.requestAnimationFrame = window[vendors[x]+'RequestAnimationFrame'];
+      window.cancelAnimationFrame  = window[vendors[x]+'CancelAnimationFrame']
+                                  || window[vendors[x]+'CancelRequestAnimationFrame'];
     }
 
     if (!window.requestAnimationFrame)
-        window.requestAnimationFrame = function(callback, element) {
-            var currTime = new Date().getTime();
-            var timeToCall = Math.max(0, 16 - (currTime - lastTime));
-            var id = window.setTimeout(function() { callback(currTime + timeToCall); },
-              timeToCall);
-            lastTime = currTime + timeToCall;
-            return id;
-        };
+      window.requestAnimationFrame = function(callback, element) {
+        var currTime = new Date().getTime();
+        var timeToCall = Math.max(0, 16 - (currTime - lastTime));
+        var id = window.setTimeout(function() { callback(currTime + timeToCall); }, timeToCall);
+
+        lastTime = currTime + timeToCall;
+        return id;
+      };
 
     if (!window.cancelAnimationFrame)
-        window.cancelAnimationFrame = function(id) {
-            clearTimeout(id);
-        };
+      window.cancelAnimationFrame = function(id) {
+        clearTimeout(id);
+      };
 }());