diff --git a/app/assets/stylesheets/new_design/new_header.scss b/app/assets/stylesheets/new_design/new_header.scss
index 597bfd52e..f3613af3f 100644
--- a/app/assets/stylesheets/new_design/new_header.scss
+++ b/app/assets/stylesheets/new_design/new_header.scss
@@ -192,9 +192,6 @@ $header-mobile-breakpoint: 550px;
     background: none;
   }
 
-  &::after {
-    display: none;
-  }
 }
 
 .header-menu {
diff --git a/app/javascript/new_design/dropdown.js b/app/javascript/new_design/dropdown.js
index 1614c08d3..c92a8f896 100644
--- a/app/javascript/new_design/dropdown.js
+++ b/app/javascript/new_design/dropdown.js
@@ -2,16 +2,21 @@ import { delegate } from '@utils';
 
 delegate('click', 'body', (event) => {
   if (!event.target.closest('.dropdown')) {
-    [...document.querySelectorAll('.dropdown')].forEach((element) =>
-      element.classList.remove('open', 'fade-in-down')
-    );
+    [...document.querySelectorAll('.dropdown')].forEach((element) => {
+      const button = element.querySelector('.dropdown-button');
+      button.setAttribute('aria-expanded', false);
+      element.classList.remove('open', 'fade-in-down');
+    });
   }
 });
 
 delegate('click', '.dropdown-button', (event) => {
   event.stopPropagation();
-  const parent = event.target.closest('.dropdown-button').parentElement;
+  const button = event.target.closest('.dropdown-button');
+  const parent = button.parentElement;
   if (parent.classList.contains('dropdown')) {
     parent.classList.toggle('open');
+    var buttonExpanded = button.getAttribute('aria-expanded') === 'true';
+    button.setAttribute('aria-expanded', !buttonExpanded);
   }
 });
diff --git a/app/views/layouts/_account_dropdown.haml b/app/views/layouts/_account_dropdown.haml
index 892a44e0e..4a26dad47 100644
--- a/app/views/layouts/_account_dropdown.haml
+++ b/app/views/layouts/_account_dropdown.haml
@@ -1,8 +1,8 @@
 .dropdown.header-menu-opener
-  %button.button.dropdown-button.header-menu-button{ title: "Mon compte" }
+  %button.button.dropdown-button.icon-only.header-menu-button{ title: "Mon compte", 'aria-expanded' => 'false', 'aria-controls' => 'mon_compte_menu' }
     .hidden Mon compte
     = image_tag "icons/account-circle.svg", alt: ''
-  %ul.header-menu.dropdown-content
+  %ul.header-menu.dropdown-content#mon_compte_menu
     %li
       .menu-item{ title: current_email }
         = current_email