diff --git a/htdocs/master.inc.php b/htdocs/master.inc.php
index 9d7bac2e791..fc4651cbf8a 100644
--- a/htdocs/master.inc.php
+++ b/htdocs/master.inc.php
@@ -161,6 +161,7 @@ if (empty($dolibarr_main_db_encryption)) $dolibarr_main_db_encryption=0;
 $conf->db->dolibarr_main_db_encryption = $dolibarr_main_db_encryption;
 if (empty($dolibarr_main_db_cryptkey)) $dolibarr_main_db_cryptkey='';
 $conf->db->dolibarr_main_db_cryptkey = $dolibarr_main_db_cryptkey;
+if (defined('TEST_DB_FORCE_TYPE')) $conf->db->type=constant('TEST_DB_FORCE_TYPE');	// For test purpose
 // Identifiant autres
 $conf->file->main_authentication = empty($dolibarr_main_authentication)?'':$dolibarr_main_authentication;
 // Force https