diff --git a/application/modules/opac/controllers/AuthController.php b/application/modules/opac/controllers/AuthController.php
index 4aa91ee91771ffaf6aeb91992855a227423c54d4..cb31165f42f44b3723e27bb8f39cf53f615502f5 100644
--- a/application/modules/opac/controllers/AuthController.php
+++ b/application/modules/opac/controllers/AuthController.php
@@ -59,7 +59,7 @@ class AuthController extends Zend_Controller_Action
 		$service_cas_server=$this->_request->getPost('service');
 		if (strlen($service_cas_server)>1) {
 			$ticket=Zend_Session::getId();
-			$this->_redirect($service_cas_server.'&ticket='.$ticket);
+			$this->_redirect($service_cas_server.'&identifiant='.$user->getId().'&ticket='.$ticket);
 		}
 	}