diff --git a/templates/mailing_list/emails_thread.html b/templates/mailing_list/emails_thread.html
index c97729d..c5d1f8e 100644
--- a/templates/mailing_list/emails_thread.html
+++ b/templates/mailing_list/emails_thread.html
@@ -11,9 +11,9 @@
     <div class="subtitle">
         #{{ thread.id }} - <span title="{{ thread.datetime }}">Created {{ thread.datetime|ago }}</span>
     </div>
-    
+
     <div class="content">
-    
+
         <div class="messages">
         {% for email in emails %}
             <div class="message" id="{{ email.id }}">
@@ -40,22 +40,22 @@
             </div>
         {% endfor %}
         </div>
-        
+
         <div class="info">
             {% for tag in tags %}
                 <div class="tag">
                     <b>{{ tag }}:</b> {{ tags[tag]|join(', ') }}
                 </div>
             {% endfor %}
-            
+
             <details open>
                 <summary>{{ participants|length }} participants</summary>
                 {% for address in participants %}
-                    {{ address[0] }} &lt;{{ address[1] }}&gt;
+                    <div>{{ address[0] }} &lt;{{ address[1] }}&gt;</div>
                 {% endfor %}
             </details>
         </div>
-    
+
     </div>
 </div>