diff --git a/settings.php b/settings.php
index f9c67e6..5443a03 100644
--- a/settings.php
+++ b/settings.php
@@ -59,7 +59,7 @@ if ($ADMIN->fulltree) {
     $settings->add(new admin_setting_configselect('auth_userkey/updateuser',
             new lang_string('updateuser', 'auth_userkey'),
             new lang_string('updateuser_desc', 'auth_userkey'), 0, $yesno));
-    
+
     // Display locking / mapping of profile fields.
     $authplugin = get_auth_plugin('userkey');
     display_auth_lock_options($settings, $authplugin->authtype,