diff --git a/htdocs/main.inc.php b/htdocs/main.inc.php
index 0f4391a692f..1a3082205e8 100644
--- a/htdocs/main.inc.php
+++ b/htdocs/main.inc.php
@@ -71,7 +71,7 @@ else
 		      );
 			
       $aDol = new DOLIAuth("DB", $params, "loginfunction");
-      $aDol->setSessionName($dolibarr_main_db_name);
+      $aDol->setSessionName("DOLSESSID_".$dolibarr_main_db_name);
       $aDol->start();
       $result = $aDol->getAuth();
       if ($result)
diff --git a/htdocs/user/logout.php b/htdocs/user/logout.php
index 24265de1eea..99dd0c3beee 100644
--- a/htdocs/user/logout.php
+++ b/htdocs/user/logout.php
@@ -36,7 +36,7 @@ define('DOL_DOCUMENT_ROOT', $dolibarr_main_document_root);
 require_once "../includes/pear/Auth/Auth.php";
 
 $a = new DOLIAuth("DB");
-$a->setSessionName($dolibarr_main_db_name);
+$a->setSessionName("DOLSESSID_".$dolibarr_main_db_name);
 $a->setShowLogin (false);
 $a->start();
 if ($a->getAuth())