diff --git a/lib/serializer.js b/lib/serializer.js
index dad8074b..24917433 100644
--- a/lib/serializer.js
+++ b/lib/serializer.js
@@ -57,7 +57,7 @@ module.exports = class Serializer {
     return bool && 'true' || 'false' // eslint-disable-line
   }
 
-  asDateTime(date) {
+  asDateTime (date) {
     if (date === null) return '""'
     if (date instanceof Date) {
       return '"' + date.toISOString() + '"'