--- tac_lite.module.orig	2009-09-27 16:56:35.000000000 +0200
+++ tac_lite.module	2009-09-27 16:56:41.000000000 +0200
@@ -449,7 +449,7 @@
  * Returns any grants which may give the user permission to perform the
  * requested op.
  */
-function tac_lite_node_grants(&$account, &$op) {
+function tac_lite_node_grants($account, $op) {
   $grants = array();
   for ($i = 1; $i <= variable_get('tac_lite_schemes', 1); $i++) {
     $config = _tac_lite_config($i);