diff --git a/classes/kohana/orm.php b/classes/kohana/orm.php
index 1f434da..a1ff953 100644
--- a/classes/kohana/orm.php
+++ b/classes/kohana/orm.php
@@ -63,7 +63,7 @@ class Kohana_ORM {
 	protected $_reload_on_wakeup   = TRUE;
 
 	// Database configuration
-	protected $_db         = 'default';
+	protected $_db         = NULL;
 	protected $_db_applied = array();
 	protected $_db_pending = array();
 	protected $_db_reset   = TRUE;