diff --git a/lib/front_matter.js b/lib/front_matter.js
index 947b9d8..19807a5 100644
--- a/lib/front_matter.js
+++ b/lib/front_matter.js
@@ -56,19 +56,14 @@ function parse(str, options) {
 
   if (!data) return {_content: str};
 
-  const keys = Object.keys(data);
-  let key = '';
-  let item = '';
-
   // Convert timezone
-  for (let i = 0, len = keys.length; i < len; i++) {
-    key = keys[i];
-    item = data[key];
+  Object.keys(data).forEach(key => {
+    const item = data[key];
 
     if (item instanceof Date) {
       data[key] = new Date(item.getTime() + (item.getTimezoneOffset() * 60 * 1000));
     }
-  }
+  });
 
   data._content = splitData.content;
   return data;