diff --git a/addons/mail/static/src/xml/web_kanban_activity.xml b/addons/mail/static/src/xml/web_kanban_activity.xml
index f6813f20f74..df92202f02e 100644
--- a/addons/mail/static/src/xml/web_kanban_activity.xml
+++ b/addons/mail/static/src/xml/web_kanban_activity.xml
@@ -4,7 +4,7 @@
 <t t-name="mail.KanbanActivity">
     <div class="o_kanban_inline_block dropdown o_kanban_selection o_mail_activity">
         <a class="dropdown-toggle o_activity_btn" data-toggle="dropdown">
-            <span class="fa fa-chevron-circle-right fa-lg"/>
+            <span class="fa fa-chevron-circle-right fa-lg fa-fw"/>
         </a>
         <ul class="dropdown-menu o_activity" role="menu">
         </ul>