diff --git a/addons/crm/crm_lead_view.xml b/addons/crm/crm_lead_view.xml
index 77aaf95deb8..63de20b42cd 100644
--- a/addons/crm/crm_lead_view.xml
+++ b/addons/crm/crm_lead_view.xml
@@ -341,7 +341,6 @@
                                         <img t-att-src="kanban_image('res.users', 'image_small', record.user_id.raw_value)" t-att-title="record.user_id.value" width="24" height="24" class="oe_kanban_avatar"/>
                                     </div>
                                     <div class="oe_kanban_footer_left">
-                                        <t t-if="record.message_unread.raw_value"><span class="oe_kanban_mail_new">New</span></t>
                                         <t t-raw="record.message_summary.raw_value"/>
                                     </div>
                                 </div>
diff --git a/addons/mail/mail_thread.py b/addons/mail/mail_thread.py
index 6a8f225234a..4493b226b18 100644
--- a/addons/mail/mail_thread.py
+++ b/addons/mail/mail_thread.py
@@ -143,7 +143,8 @@ class mail_thread(osv.Model):
             res[notif.message_id.res_id]['message_unread'] = True
 
         for thread in self.browse(cr, uid, ids, context=context):
-            res[thread.id]['message_summary'] = "<span><span class='oe_e'>9</span> %d</span> <span><span class='oe_e'>+</span> %d</span>" % (len(thread.message_comment_ids), len(thread.message_follower_ids))
+            cls = res[thread.id]['message_unread'] and ' class="oe_kanban_mail_new"' or ''
+            res[thread.id]['message_summary'] = "<span%s><span class='oe_e'>9</span> %d</span> <span><span class='oe_e'>+</span> %d</span>" % (cls, len(thread.message_comment_ids), len(thread.message_follower_ids))
             res[thread.id]['message_is_follower'] = user.partner_id.id in [follower.id for follower in thread.message_follower_ids]
         return res