diff --git a/include/class.usersession.php b/include/class.usersession.php
index e77f65fac77f63853cb3c6a4dea99d93e51ea491..d65a64719a0b43702ca74f4fd1ac7d6e3156b20d 100644
--- a/include/class.usersession.php
+++ b/include/class.usersession.php
@@ -117,7 +117,7 @@ class ClientSession extends Client {
 
     function ClientSession($email, $id){
         parent::Client($id, $email);
-        $this->session= new UserSession($email);
+        $this->session= new UserSession(strtolower($email));
     }
 
     function isValid(){