diff --git a/addons/mail/static/src/components/chat_window_hidden_menu/chat_window_hidden_menu.xml b/addons/mail/static/src/components/chat_window_hidden_menu/chat_window_hidden_menu.xml
index f4465ab0841..b60ec5b7ac6 100644
--- a/addons/mail/static/src/components/chat_window_hidden_menu/chat_window_hidden_menu.xml
+++ b/addons/mail/static/src/components/chat_window_hidden_menu/chat_window_hidden_menu.xml
@@ -3,7 +3,7 @@
 
     <t t-name="mail.ChatWindowHiddenMenu" owl="1">
         <div class="o_ChatWindowHiddenMenu dropup position-fixed bottom-0 align-items-stretch d-flex px-2 py-1 rounded-top-3 bg-900 cursor-pointer" t-attf-class="{{ className }}" t-ref="root">
-            <div class="o_ChatWindowHiddenMenu_dropdownToggle dropdown-toggle justify-content-center align-items-center flex-grow-1 d-flex mw-100" t-att-class="{ 'show opacity-50': messaging.chatWindowManager.isHiddenMenuOpen }" t-on-click="messaging.chatWindowManager.onClickHiddenMenuToggler">
+            <div class="o_ChatWindowHiddenMenu_dropdownToggle dropdown-toggle justify-content-center align-items-center flex-grow-1 d-flex mw-100" t-att-class="{ 'show opacity-50': messaging.chatWindowManager.isHiddenMenuOpen }" data-bs-toggle="dropdown" t-on-click="messaging.chatWindowManager.onClickHiddenMenuToggler">
                 <div class="o_ChatWindowHiddenMenu_dropdownToggleIcon o_ChatWindowHiddenMenu_dropdownToggleItem me-1 fa fa-comments-o"/>
                 <div class="o_ChatWindowHiddenMenu_dropdownToggleItem o_ChatWindowHiddenMenu_windowCounter mx-1 text-truncate">
                     <t t-esc="messaging.chatWindowManager.allOrderedHidden.length"/>