diff --git a/wp-admin/admin-ajax.php b/wp-admin/admin-ajax.php
index 69048c980..614812a2c 100644
--- a/wp-admin/admin-ajax.php
+++ b/wp-admin/admin-ajax.php
@@ -54,9 +54,9 @@ case 'fetch-list' :
 
 	$current_screen = (object) $_GET['list_args']['screen'];
 	//TODO fix this in a better way see #15336
-	$current_screen['is_network'] = (bool) $current_screen['is_network'];
-	$current_screen['is_user'] = (bool) $current_screen['is_user'];
-	
+	$current_screen->is_network = 'false' === $current_screen->is_network ? false : true;
+	$current_screen->is_user = 'false' === $current_screen->is_user ? false : true;
+
 	$wp_list_table = get_list_table( $_GET['list_args']['class'] );
 	if ( ! $wp_list_table )
 		die( '0' );