diff --git a/src/DateUtils.js b/src/DateUtils.js
index be5f432d06..46dda6aeb4 100644
--- a/src/DateUtils.js
+++ b/src/DateUtils.js
@@ -1,5 +1,6 @@
 /*
 Copyright 2015, 2016 OpenMarket Ltd
+Copyright 2017 Vector Creations Ltd
 
 Licensed under the Apache License, Version 2.0 (the "License");
 you may not use this file except in compliance with the License.
@@ -18,32 +19,32 @@ limitations under the License.
 import { _t } from './languageHandler';
 
 function getDaysArray() {
-    var days = [];
-    days.push(_t('Sun'));
-    days.push(_t('Mon'));
-    days.push(_t('Tue'));
-    days.push(_t('Wed'));
-    days.push(_t('Thu'));
-    days.push(_t('Fri'));
-    days.push(_t('Sat'));
-    return days;
+    return [
+        _t('Sun'),
+        _t('Mon'),
+        _t('Tue'),
+        _t('Wed'),
+        _t('Thu'),
+        _t('Fri'),
+        _t('Sat'),
+    ];
 }
 
 function getMonthsArray() {
-    var months = [];
-    months.push(_t('Jan'));
-    months.push(_t('Feb'));
-    months.push(_t('Mar'));
-    months.push(_t('Apr'));
-    months.push(_t('May'));
-    months.push(_t('Jun'));
-    months.push(_t('Jul'));
-    months.push(_t('Aug'));
-    months.push(_t('Sep'));
-    months.push(_t('Oct'));
-    months.push(_t('Nov'));
-    months.push(_t('Dec'));
-    return months;
+    return [
+        _t('Jan'),
+        _t('Feb'),
+        _t('Mar'),
+        _t('Apr'),
+        _t('May'),
+        _t('Jun'),
+        _t('Jul'),
+        _t('Aug'),
+        _t('Sep'),
+        _t('Oct'),
+        _t('Nov'),
+        _t('Dec'),
+    ];
 }
 
 function pad(n) {