diff --git a/resources/js/archive-template-publications.js b/resources/js/archive-template-publications.js
index 9cef519..848da14 100644
--- a/resources/js/archive-template-publications.js
+++ b/resources/js/archive-template-publications.js
@@ -130,7 +130,7 @@ function handleSubmenuToggle() {
   submenuToggle.addEventListener('click', () => {
     const isSubmenuOpen = submenuToggle.getAttribute('aria-expanded');
 
-    if (isSubmenuOpen != null) {
+    if (isSubmenuOpen === 'true') {
       return closeSubMenuFilters();
     } else {
       return openSubMenuFilters();
@@ -162,8 +162,10 @@ function openSubMenuFilters() {
     '.filters-toolbar__action-thematiques-filters .action-thematiques-filters-list'
   );
   submenuFilters.removeAttribute('hidden');
+  submenuFilters.removeAttribute('aria-hidden');
+
   submenuToggle.setAttribute('active', '');
-  submenuToggle.setAttribute('aria-expanded', '');
+  submenuToggle.setAttribute('aria-expanded', 'true');
 }
 function closeSubMenuFilters() {
   const submenuToggle = document.querySelector(
@@ -173,8 +175,11 @@ function closeSubMenuFilters() {
     '.filters-toolbar__action-thematiques-filters .action-thematiques-filters-list'
   );
   submenuFilters.setAttribute('hidden', '');
+  submenuFilters.setAttribute('aria-hidden', '');
+
   submenuToggle.removeAttribute('active');
-  submenuToggle.removeAttribute('aria-expanded');
+  submenuToggle.setAttribute('aria-expanded', 'false');
+  // submenuToggle.removeAttribute('aria-expanded');
 }
 
 // #################################################
diff --git a/resources/js/taxonomy-thematique-(faq).js b/resources/js/taxonomy-thematique-(faq).js
index 1585261..c5572c5 100644
--- a/resources/js/taxonomy-thematique-(faq).js
+++ b/resources/js/taxonomy-thematique-(faq).js
@@ -14,7 +14,7 @@ function handleSubmenuToggle() {
   submenuToggle.addEventListener('click', () => {
     const isSubmenuOpen = submenuToggle.getAttribute('aria-expanded');
 
-    if (isSubmenuOpen != null) {
+    if (isSubmenuOpen === 'true') {
       return closeSubMenuFilters();
     } else {
       return openSubMenuFilters();
@@ -46,8 +46,10 @@ function openSubMenuFilters() {
     '.filters-toolbar__action-thematiques-filters .action-thematiques-filters-list'
   );
   submenuFilters.removeAttribute('hidden');
+  submenuFilters.removeAttribute('aria-hidden');
+
   submenuToggle.setAttribute('active', '');
-  submenuToggle.setAttribute('aria-expanded', '');
+  submenuToggle.setAttribute('aria-expanded', 'true');
 }
 function closeSubMenuFilters() {
   const submenuToggle = document.querySelector(
@@ -57,8 +59,10 @@ function closeSubMenuFilters() {
     '.filters-toolbar__action-thematiques-filters .action-thematiques-filters-list'
   );
   submenuFilters.setAttribute('hidden', '');
+  submenuFilters.setAttribute('aria-hidden', '');
+
   submenuToggle.removeAttribute('active');
-  submenuToggle.removeAttribute('aria-expanded');
+  submenuToggle.setAttribute('aria-expanded', 'false');
 }
 
 // ###########################
diff --git a/taxonomy-thematiques.php b/taxonomy-thematiques.php
index 6e4fe82..536ae4a 100644
--- a/taxonomy-thematiques.php
+++ b/taxonomy-thematiques.php
@@ -112,8 +112,8 @@ FILTERS
 			<!-- THEMATIQUES FILTERS -->
 			<div class="action-thematiques-filters-wrapper">
 				<div class="filters-toolbar__action-thematiques-filters">
-					<button class="filter-by-thematiques-submenu-toggle"><?php echo __("Filtrer par catégories", "homegrade-theme__texte-fonctionnel") ?></button>
-					<ul class="action-thematiques-filters-list" hidden>
+					<button class="filter-by-thematiques-submenu-toggle" aria-expanded="false"><?php echo __("Filtrer par catégories", "homegrade-theme__texte-fonctionnel") ?></button>
+					<ul class="action-thematiques-filters-list" hidden aria-hidden>
 						<li>
 							<input class="filters-toolbar__action-thematiques-filter--show-all" type="checkbox" id="all" name="all" value="all" checked>
 							<label for="all"><?php echo __("Tous", "homegrade-theme__texte-fonctionnel")  ?></label>
diff --git a/template-publications.php b/template-publications.php
index 3e53181..666a7f4 100644
--- a/template-publications.php
+++ b/template-publications.php
@@ -140,8 +140,8 @@ $total_posts_found = $brochuresPosts->found_posts + $fichesInfosPosts->found_pos
 
 				?>
 				<div class="filters-toolbar__action-thematiques-filters">
-					<button class="filter-by-thematiques-submenu-toggle"><?php echo __("Filtrer par catégories", "homegrade-theme__texte-fonctionnel") ?></button>
-					<ul class="action-thematiques-filters-list" hidden>
+					<button class="filter-by-thematiques-submenu-toggle" aria-expanded="false"><?php echo __("Filtrer par catégories", "homegrade-theme__texte-fonctionnel") ?></button>
+					<ul class="action-thematiques-filters-list" hidden aria-hidden>
 						<li>
 							<input class="filters-toolbar__action-thematiques-filter--show-all" type="checkbox" id="all" name="all" value="all" checked>
 							<label for="all"><?php echo __("Tous", "homegrade-theme__texte-fonctionnel")  ?></label>