diff --git a/tickets.php b/tickets.php
index 1887ae500c97a1ace79095ea4caa86f838d67fcf..8ba0bd644349edee72c61853278ff5b622af799b 100644
--- a/tickets.php
+++ b/tickets.php
@@ -71,7 +71,7 @@ if ($_POST && is_object($ticket) && $ticket->getId()) {
         if(!$ticket->checkUserAccess($thisclient)) //double check perm again!
             $errors['err']=__('Access Denied. Possibly invalid ticket ID');
 
-        $_POST['message'] = ThredEntryBody::clean($_POST['message']);
+        $_POST['message'] = ThreadEntryBody::clean($_POST['message']);
         if (!$_POST['message'])
             $errors['message'] = __('Message required');