diff --git a/src/wp-admin/js/customize-nav-menus.js b/src/wp-admin/js/customize-nav-menus.js
index 4d6d758224..e707e4d34f 100644
--- a/src/wp-admin/js/customize-nav-menus.js
+++ b/src/wp-admin/js/customize-nav-menus.js
@@ -855,11 +855,13 @@
 				customizer = section.container.closest( '.wp-full-overlay-sidebar-content' );
 			if ( expanded ) {
 				button.addClass( 'open' );
+				button.attr( 'aria-expanded', 'true' );
 				content.slideDown( 'fast', function() {
 					customizer.scrollTop( customizer.height() );
 				});
 			} else {
 				button.removeClass( 'open' );
+				button.attr( 'aria-expanded', 'false' );
 				content.slideUp( 'fast' );
 			}
 		}
diff --git a/src/wp-includes/class-wp-customize-section.php b/src/wp-includes/class-wp-customize-section.php
index e7befe7bfd..2c4db4ef4b 100644
--- a/src/wp-includes/class-wp-customize-section.php
+++ b/src/wp-includes/class-wp-customize-section.php
@@ -562,9 +562,8 @@ class WP_Customize_New_Menu_Section extends WP_Customize_Section {
 	protected function render() {
 		?>
 		<li id="accordion-section-<?php echo esc_attr( $this->id ); ?>" class="accordion-section-new-menu">
-			<button type="button" class="button-secondary add-new-menu-item add-menu-toggle">
+			<button type="button" class="button-secondary add-new-menu-item add-menu-toggle" aria-expanded="false">
 				<?php echo esc_html( $this->title ); ?>
-				<span class="screen-reader-text"><?php _e( 'Press return or enter to open' ); ?></span>
 			</button>
 			<ul class="new-menu-section-content"></ul>
 		</li>