diff --git a/lib/utils.js b/lib/utils.js
index 9dc54538..267f3972 100644
--- a/lib/utils.js
+++ b/lib/utils.js
@@ -67,13 +67,13 @@ function dateToString(date) {
   }
 
   var offset = -date.getTimezoneOffset();
-  var ret = pad(date.getFullYear(), 4) + '-'
-    + pad(date.getMonth() + 1, 2) + '-'
-    + pad(date.getDate(), 2) + 'T'
-    + pad(date.getHours(), 2) + ':'
-    + pad(date.getMinutes(), 2) + ':'
-    + pad(date.getSeconds(), 2) + '.'
-    + pad(date.getMilliseconds(), 3);
+  var ret = pad(date.getFullYear(), 4) + '-' +
+    pad(date.getMonth() + 1, 2) + '-' +
+    pad(date.getDate(), 2) + 'T' +
+    pad(date.getHours(), 2) + ':' +
+    pad(date.getMinutes(), 2) + ':' +
+    pad(date.getSeconds(), 2) + '.' +
+    pad(date.getMilliseconds(), 3);
 
   if(offset < 0) {
     ret += "-";