diff --git a/machina/templates/machina/forum_conversation/topic_list.html b/machina/templates/machina/forum_conversation/topic_list.html
index 21b2bc843..e57285b7a 100644
--- a/machina/templates/machina/forum_conversation/topic_list.html
+++ b/machina/templates/machina/forum_conversation/topic_list.html
@@ -14,7 +14,7 @@
           <div class="col-md-2 col-sm-3 hidden-xs topic-last-post-col">{% trans "Last post" %}</div>
         </div>
       </div>
-      <div class="panel-body">{% if not force_all_unread and unread_topics is None %}{% get_unread_topics topics request.user as unread_topics %}{% endif %}
+      <div class="panel-body">{% if not force_all_unread and unread_topics == None %}{% get_unread_topics topics request.user as unread_topics %}{% endif %}
       {% for topic in topics %}
       <div class="row panel-row">
         <div class="col-md-8 col-sm-9 col-xs-11 topic-name">