diff --git a/_includes/head.html b/_includes/head.html
index e6fe552..deefddd 100644
--- a/_includes/head.html
+++ b/_includes/head.html
@@ -4,7 +4,7 @@
 <header class="top">
     <div class="wrap">
         <h1 itemprop="name">SQL Style Guide</h1>
-        <p class="author" itemprop="author">by 
+        <p class="author" itemprop="author" itemscope itemtype="http://schema.org/Person">by 
             <a href="https://www.simonholywell.com/?utm_source=sqlstyle.guide&utm_medium=link&utm_campaign=header" itemprop="url"><span itemprop="name">Simon Holywell</span></a> &middot;
             <a href="https://twitter.com/treffynnon">@Treffynnon</a>
         </p>