diff --git a/src/wp-includes/nav-menu.php b/src/wp-includes/nav-menu.php
index 26e0b1f727..ee926ccfa4 100644
--- a/src/wp-includes/nav-menu.php
+++ b/src/wp-includes/nav-menu.php
@@ -547,10 +547,7 @@ function wp_get_nav_menu_items( $menu, $args = array() ) {
 	$defaults = array( 'order' => 'ASC', 'orderby' => 'menu_order', 'post_type' => 'nav_menu_item',
 		'post_status' => 'publish', 'output' => ARRAY_A, 'output_key' => 'menu_order', 'nopaging' => true );
 	$args = wp_parse_args( $args, $defaults );
-	if ( count( $items ) > 1 )
-		$args['include'] = implode( ',', $items );
-	else
-		$args['include'] = $items[0];
+	$args['include'] = $items;
 
 	$items = get_posts( $args );