diff --git a/lms/templates/discussion/_thread.html b/lms/templates/discussion/_thread.html
index 10194745c4..220022fc81 100644
--- a/lms/templates/discussion/_thread.html
+++ b/lms/templates/discussion/_thread.html
@@ -62,7 +62,7 @@
 <%def name="render_tags(content, type, **kwargs)">
   <%
     def url_for_tags(tags):
-      return reverse('django_comment_client.forum.views.forum_form_discussion', args=[course_id, discussion_id]) + '?' + urllib.urlencode({'tags': ",".join(tags)})
+      return reverse('django_comment_client.forum.views.forum_form_discussion', args=[course_id, content['commentable_id']]) + '?' + urllib.urlencode({'tags': ",".join(tags)})
   %>
   % if type == "thread":
     <div class="thread-tags">