diff --git a/_includes/default/head.liquid b/_includes/default/head.liquid
index 2668df451e..837cf0ca32 100644
--- a/_includes/default/head.liquid
+++ b/_includes/default/head.liquid
@@ -90,7 +90,7 @@
           function gtag(){dataLayer.push(arguments);}
           gtag('js', new Date());
 
-          gtag('config', {{ site.google_analytics }});
+          gtag('config', '{{ site.google_analytics }}');
       </script>
     {% endif %}