diff --git a/bt/includes/init_tr.php b/bt/includes/init_tr.php
index 2faf57e3..bca3dfbf 100644
--- a/bt/includes/init_tr.php
+++ b/bt/includes/init_tr.php
@@ -77,6 +77,8 @@ class sql_db
 
 	var $DBS           = array();
 
+	var $engine			= 'MySQL';
+
 	/**
 	* Constructor
 	*/