diff --git a/lib/Resque.php b/lib/Resque.php
index c28a889..d429ae5 100644
--- a/lib/Resque.php
+++ b/lib/Resque.php
@@ -26,7 +26,7 @@ class Resque
 	 * @param mixed $server Host/port combination separated by a colon, or
 	 * a nested array of servers with host/port pairs.
 	 */
-	public static function setBackend($server)
+	public static function setBackend($server, $database = 0)
 	{
 		if(is_array($server)) {
 			require_once dirname(__FILE__) . '/Resque/RedisCluster.php';