diff --git a/packages/block-library/src/navigation/index.php b/packages/block-library/src/navigation/index.php
index 44c4d1410f4be..99feef98542ed 100644
--- a/packages/block-library/src/navigation/index.php
+++ b/packages/block-library/src/navigation/index.php
@@ -828,7 +828,7 @@ function block_core_navigation_add_directives_to_submenu( $tags, $block_attribut
 		$tags->set_attribute( 'data-wp-interactive', 'core/navigation' );
 		$tags->set_attribute( 'data-wp-context', '{ "submenuOpenedBy": { "click": false, "hover": false, "focus": false }, "type": "submenu" }' );
 		$tags->set_attribute( 'data-wp-watch', 'callbacks.initMenu' );
-		$tags->set_attribute( 'data-wp-on-async--focusout', 'actions.handleMenuFocusout' );
+		$tags->set_attribute( 'data-wp-on--focusout', 'actions.handleMenuFocusout' );
 		$tags->set_attribute( 'data-wp-on--keydown', 'actions.handleMenuKeydown' );
 
 		// This is a fix for Safari. Without it, Safari doesn't change the active