diff --git a/_layouts/default.html b/_layouts/default.html
index 3bffdc3..c805360 100644
--- a/_layouts/default.html
+++ b/_layouts/default.html
@@ -7,7 +7,7 @@
 		<link rel="stylesheet" href="{{ '/assets/css/style.css?v=' | append: site.github.build_revision | relative_url }}">
 		<meta name="theme-color" content="#0066ff">
 		<link rel="stylesheet" href="/assets/authorblurb.css">
-		<link rel="stylesheet" href="/assets/additionalCSS.css"
+		<link rel="stylesheet" href="/assets/additionalCSS.css">
 		<link rel="icon" type="image/png" href="/assets/img/AstraGroup_128x128.png">
 		{% seo %}
 	</head>