diff --git a/private_upload.module b/private_upload.module
index 712e744..285ab59 100644
--- a/private_upload.module
+++ b/private_upload.module
@@ -647,7 +647,7 @@ function private_upload_theme() {
  *  Based on theme_upload_form_current.
  *  Adding the Private checkbox.
  */
-function theme_private_upload_form(&$form) {
+function theme_private_upload_form($form) {
   $header = array(t('Delete'), t('List'), t('Private'), t('Description'), t('Weight'), t('Size'), '');
   drupal_add_tabledrag('upload-attachments', 'order', 'sibling', 'upload-weight');