diff --git a/conservancy/templates/supporter/index.html b/conservancy/templates/supporter/index.html
index 9ee0d328534c7deef5517defac46ccbd894a34b0..4ad1eb8d939b19774a01b5760fc92e7c130d7a11 100644
--- a/conservancy/templates/supporter/index.html
+++ b/conservancy/templates/supporter/index.html
@@ -4,7 +4,7 @@
 {% block category %}sustainer{% endblock %}
 
 {% block head %}
-<script type="text/javascript" src="{% static 'js/supporter-page.js' %}"></script>
+<script type="text/javascript" src="{% static 'js/supporter-page.js' %}" defer></script>
 <link href="{% static 'css/forms.css' %}" rel="stylesheet" type="text/css"/>
 {% include "opengraph_partial.html" with url="/sustainer/" title="Support Conservancy!" description="Software freedom is critical to many of today&rsquo;s most pressing social issues, but it&rsquo;s only effective when FOSS is for everyone. Support Conservancy today to help make that happen!" %}
 {% include "opengraph_urllist_partial.html" with property='image' urls='' fallback='/static/img/conservancy-logo.png' %}