diff --git a/addons/website/views/website_templates.xml b/addons/website/views/website_templates.xml
index 9f07c1a2ff2..ed14fae62c2 100644
--- a/addons/website/views/website_templates.xml
+++ b/addons/website/views/website_templates.xml
@@ -171,7 +171,7 @@
 
     <xpath expr="//div[@id='wrapwrap']" position="after">
         <t t-if="website and website.google_analytics_key and request.env['ir.http']._is_allowed_cookie('optional') and not editable">
-            <script id="tracking_code" async="1" t-attf-src="https://www.googletagmanager.com/gtag/js?id={{ website.google_analytics_key }}"></script>
+            <script id="tracking_code" t-attf-src="https://www.googletagmanager.com/gtag/js?id={{ website.google_analytics_key }}" async="async"/>
             <script>
                 window.dataLayer = window.dataLayer || [];
                 function gtag(){dataLayer.push(arguments);}