diff --git a/addons/mail/static/src/components/activity_box/activity_box.xml b/addons/mail/static/src/components/activity_box/activity_box.xml
index 2538ac9a462..cadc212f19b 100644
--- a/addons/mail/static/src/components/activity_box/activity_box.xml
+++ b/addons/mail/static/src/components/activity_box/activity_box.xml
@@ -7,7 +7,7 @@
                 <a role="button" class="o_ActivityBox_title btn" t-on-click="_onClickTitle">
                     <hr class="o_ActivityBox_titleLine" />
                     <span class="o_ActivityBox_titleText">
-                        <i class="fa fa-fw" t-att-class="chatter.isActivityBoxVisible ? 'fa-caret-right' : 'fa-caret-down'"/>
+                        <i class="fa fa-fw" t-att-class="chatter.isActivityBoxVisible ? 'fa-caret-down' : 'fa-caret-right'"/>
                         Planned activities
                     </span>
                     <t t-if="!chatter.isActivityBoxVisible">