diff --git a/actions/openidlogin.php b/actions/openidlogin.php
index 2753f21ab5..a9fbf7a26d 100644
--- a/actions/openidlogin.php
+++ b/actions/openidlogin.php
@@ -19,6 +19,8 @@
 
 if (!defined('LACONICA')) { exit(1); }
 
+require_once(INSTALLDIR.'/lib/openid.php');
+
 class OpenidloginAction extends Action {
 
 	function handle($args) {