diff --git a/source/_layouts/talk.html.twig b/source/_layouts/talk.html.twig
index f40a5063..bc99c861 100644
--- a/source/_layouts/talk.html.twig
+++ b/source/_layouts/talk.html.twig
@@ -10,9 +10,9 @@
 
         {{ page.blocks.content|raw }}
 
-        {% if page.joindin_id %}
+        {% if page.joindin %}
             <p>
-                <a href="https://joind.in/talk/view/{{ page.joindin_id }}">Rate this talk on Joind.in.</a>
+                <a href="{{ page.joindin }}" class="btn btn-primary">Rate this talk</a>
             </p>
         {% endif %}
 
diff --git a/source/_talks/2015-04-08-drupal8.md b/source/_talks/2015-04-08-drupal8.md
index dfe6af37..3ea70d0d 100644
--- a/source/_talks/2015-04-08-drupal8.md
+++ b/source/_talks/2015-04-08-drupal8.md
@@ -3,7 +3,7 @@ title: Drupal 8
 location: PHPSW
 slides: https://speakerdeck.com/opdavies/drupal-8
 slides_embed: <script async class="speakerdeck-embed" data-id="46ba4ba577d94a32b7abdade610ceb69" data-ratio="1.29456384323641" src="//speakerdeck.com/assets/embed.js"></script>
-joindin_id: 14380
+joindin: https://joind.in/talk/view/14380
 tags:
     - meetup
     - php