diff --git a/site/_includes/site_nav.html b/site/_includes/site_nav.html
index 3dccb883..7fb82299 100644
--- a/site/_includes/site_nav.html
+++ b/site/_includes/site_nav.html
@@ -12,6 +12,6 @@
     <a href="/blog/">Blog</a>
   </li>
   <li>
-    <button class="fa-solid theme-toggle" data-toggle-theme></i>
+    <button class="fa-solid theme-toggle" data-toggle-theme></button>
   </li>
 </ul>