diff --git a/lib/common.php b/lib/common.php
index ffc1e56fc2..e7d69303c8 100644
--- a/lib/common.php
+++ b/lib/common.php
@@ -111,5 +111,6 @@ require_once(INSTALLDIR.'/classes/Confirm_address.php');
 require_once(INSTALLDIR.'/classes/Remember_me.php');
 require_once(INSTALLDIR.'/classes/Queue_item.php');
 require_once(INSTALLDIR.'/classes/Reply.php');
+require_once(INSTALLDIR.'/classes/Sms_carrier.php');
 
 require_once('markdown.php');