diff --git a/symposion/templates/emails/proposal_updated/message.html b/symposion/templates/emails/proposal_updated/message.html
index d5ed74ec5c62f7bb6f60416393264b5c9e8c1864..eef8af8d9e13630a0b893374876b382d66e3b449 100644
--- a/symposion/templates/emails/proposal_updated/message.html
+++ b/symposion/templates/emails/proposal_updated/message.html
@@ -1,8 +1,9 @@
+{% load url from future %}
 {% load account_tags %}
 <p>
     <b>{% user_display user %}</b> has made changes to <b>{{ proposal.title }}</b> which you have previously reviewed or commented on.
 </p>
 <p>
-    {% url review_detail proposal.pk as detail_url %}
+    {% url 'review_detail' proposal.pk as detail_url %}
     View the latest version of the proposal online at <a href="http://{{ current_site }}{{ detail_url }}">http://{{ current_site }}{{ detail_url }}</a>
 </p>