diff --git a/src/wp-includes/nav-menu-template.php b/src/wp-includes/nav-menu-template.php
index cbd6fcdef9..1910e1737e 100644
--- a/src/wp-includes/nav-menu-template.php
+++ b/src/wp-includes/nav-menu-template.php
@@ -579,9 +579,8 @@ function _wp_menu_item_classes_by_context( &$menu_items ) {
  */
 function walk_nav_menu_tree( $items, $depth, $r ) {
 	$walker = ( empty( $r->walker ) ) ? new Walker_Nav_Menu : $r->walker;
-	$args   = array( $items, $depth, $r );
 
-	return call_user_func_array( array( $walker, 'walk' ), $args );
+	return $walker->walk( $items, $depth, $r );
 }
 
 /**