index cac88dc..5868396 100644
--- a/relativity_access.module
+++ b/relativity_access.module
@@ -57,7 +57,7 @@ function _relativity_access_admin() {
  * Implementation of hook_node_grants().
  */
 function relativity_access_node_grants($account, $op) {
-  if ($account->relativity_access_node_grants_skip)
+  if (isset($account->relativity_access_node_grants_skip) && $account->relativity_access_node_grants_skip)
     return;
   $account->relativity_access_node_grants_skip = TRUE;
   $inherited_grants = module_invoke_all('node_grants', $account, $op);