diff --git a/layouts/partials/head.html b/layouts/partials/head.html
index cb85e64..7652cd1 100644
--- a/layouts/partials/head.html
+++ b/layouts/partials/head.html
@@ -58,7 +58,7 @@
 <script src="https://cdnjs.cloudflare.com/ajax/libs/pangu/4.0.7/pangu.min.js"></script>
 {{ end }}
 
-{{ if $.site.Params.experimental.comment }}
+{{ if $.Site.Params.experimental.comment }}
 <link rel="stylesheet" href="https://unpkg.com/gitalk/dist/gitalk.css">
 <script src="https://unpkg.com/gitalk/dist/gitalk.min.js"></script>
 {{ end }}