diff --git a/adminer/drivers/mysql.inc.php b/adminer/drivers/mysql.inc.php
index 72a393ae..41c685c5 100644
--- a/adminer/drivers/mysql.inc.php
+++ b/adminer/drivers/mysql.inc.php
@@ -265,7 +265,7 @@ if (!defined("DRIVER")) {
 	* @param bool
 	* @return array
 	*/
-	function get_databases($flush = true) {
+	function get_databases($flush) {
 		global $connection;
 		// SHOW DATABASES can take a very long time so it is cached
 		$return = &get_session("dbs");