diff --git a/include/class.ticket.php b/include/class.ticket.php
index c8b2c7bd096b708bce5be669ff88c4be0cbbe237..f3f68ffd6ab9fa75f7fcd9ef405daa4184140e36 100644
--- a/include/class.ticket.php
+++ b/include/class.ticket.php
@@ -176,7 +176,7 @@ class Ticket {
 
     function getAuthToken() {
         # XXX: Support variable email address (for CCs)
-        return md5($this->getId() . $this->getEmail() . SECRET_SALT);
+        return md5($this->getId() . strtolower($this->getEmail()) . SECRET_SALT);
     }
 
     function getName() {