--- includes/admin.inc
+++ includes/admin.inc
@@ -1496,7 +1496,7 @@ function views_ui_build_identifier($key, $view, $display_id, $args) {
  * Build up a $form_state object suitable for use with drupal_build_form
  * based on known information about a form.
  */
-function views_ui_build_form_state($js, $key, &$view, $display_id, $args) {
+function views_ui_build_form_state($js, $key, $view, $display_id, $args) {
   $form = views_ui_ajax_forms($key);
   // Build up form state
   $form_state = array(