--- userpoints_invite.install
+++ userpoints_invite.install
@@ -1,14 +1,11 @@
 <?php
 // $Id: userpoints_invite.install,v 1.3 2008/11/07 02:59:38 kbahey Exp $
 
-define('USERPOINTS_INVITE_REGISTER',         'userpoints_invite_register');
-define('USERPOINTS_INVITE_REGISTER_INVITER', 'userpoints_invite_register_inviter');
-define('USERPOINTS_INVITE_REGISTER_INVITEE', 'userpoints_invite_register_invitee');
-
 /**
  * An update schema - renames the USERPOINTS_INVITE_REGISTER variable to USERPOINTS_INVITE_REGISTER_INVITER
  */
 function userpoints_invite_update_1() {
+  module_load_include('module', 'userpoints_invite');
   $var = variable_get(USERPOINTS_INVITE_REGISTER, 'unset');
   if ($var != 'unset') {
     variable_del(USERPOINTS_INVITE_REGISTER);