diff --git a/plugins/modules/pfsense_user.py b/plugins/modules/pfsense_user.py
index f6d02832..6ca12837 100644
--- a/plugins/modules/pfsense_user.py
+++ b/plugins/modules/pfsense_user.py
@@ -108,6 +108,7 @@
 $a_user = &$config['system']['user'];
 $userent = $a_user[{idx}];
 local_user_set($userent);
+global $groupindex;
 foreach ({mod_groups} as $groupname) {{
     $group = &$config['system']['group'][$groupindex[$groupname]];
     local_group_set($group);
@@ -121,6 +122,7 @@
 USER_PHP_COMMAND_DEL = USER_PHP_COMMAND_PREFIX + """
 $userent['name'] = '{name}';
 $userent['uid'] = {uid};
+global $groupindex;
 foreach ({mod_groups} as $groupname) {{
     $group = &$config['system']['group'][$groupindex[$groupname]];
     local_group_set($group);