diff --git a/js/navigation.js b/js/navigation.js
index 6cc0af92..3ffa7cc8 100644
--- a/js/navigation.js
+++ b/js/navigation.js
@@ -5,7 +5,7 @@
  * navigation support for dropdown menus.
  */
 ( function() {
-	var container, button, menu, links, subMenus, i, len;
+	var container, button, menu, links, i, len;
 
 	container = document.getElementById( 'site-navigation' );
 	if ( ! container ) {
@@ -44,12 +44,6 @@
 
 	// Get all the link elements within the menu.
 	links    = menu.getElementsByTagName( 'a' );
-	subMenus = menu.getElementsByTagName( 'ul' );
-
-	// Set menu items with submenus to aria-haspopup="true".
-	for ( i = 0, len = subMenus.length; i < len; i++ ) {
-		subMenus[i].parentNode.setAttribute( 'aria-haspopup', 'true' );
-	}
 
 	// Each time a menu link is focused or blurred, toggle focus.
 	for ( i = 0, len = links.length; i < len; i++ ) {