diff --git a/tac_lite.module b/tac_lite.module
index d69671d..f679c57 100644
--- a/tac_lite.module
+++ b/tac_lite.module
@@ -409,7 +409,7 @@ function _tac_lite_get_terms_by_nid($nid) {
  * Users are granted access to terms either because of who they are,
  * or because of the roles they have.
  */
-function _tac_lite_user_tids(&$account, $scheme) {
+function _tac_lite_user_tids($account, $scheme) {
   // grant id 0 is reserved for nodes which were not given a grant id when they were created.  By adding 0 to the grant id, we let the user view those nodes.
   $grants = array(0);
   $config = _tac_lite_config($scheme);
@@ -449,7 +449,7 @@ function _tac_lite_user_tids(&$account, $scheme) {
  * Returns any grants which may give the user permission to perform the
  * requested op.
  */
-function tac_lite_node_grants(&$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);