diff --git a/html/user_login.php b/html/user_login.php
index 94e4a9099..0780af731 100644
--- a/html/user_login.php
+++ b/html/user_login.php
@@ -129,7 +129,7 @@ if ( $User->admin == 0 || (defined("MULTI")&& MULTI == 0 ) )
     $folder=$User->get_available_folder();
     if ( $folder != null  && count($folder) == 1 )
     {
-
+            echo _("Si la redirection ne fonctionne pas, vous devez changer la valeur de NOALYSS_URL ");
             redirect(NOALYSS_URL.'/do.php?gDossier='.$folder[0]['dos_id']);
             exit();
     }
diff --git a/include/constant.php b/include/constant.php
index a10f5bb39..b27c1a35c 100644
--- a/include/constant.php
+++ b/include/constant.php
@@ -322,7 +322,7 @@ if ( ! defined ("NOALYSS_URL")) {
         $protocol=$_SERVER['REQUEST_SCHEME'];
     }
     $base=$protocol.'://'.
-            $_SERVER['HTTP_HOST'].
+            $_SERVER['SERVER_NAME'].
             ":".$_SERVER['SERVER_PORT'].
             dirname($_SERVER['PHP_SELF']);
     define ("NOALYSS_URL",$base);