diff --git a/lib/setup.php b/lib/setup.php
index 5a513bccae6514a69092332bfe0ad34fcf9c7864..738a99fb7cce482d4e86b766be6de9862fa7b32d 100644
--- a/lib/setup.php
+++ b/lib/setup.php
@@ -4,7 +4,7 @@ class DatabaseSetupException extends Exception
 {
 	private $hint;
 
-	public function __construct($message, $hint, $code = 0, Exception $previous = null) {
+	public function __construct($message, $hint = '', $code = 0, Exception $previous = null) {
 		$this->hint = $hint;
 		parent::__construct($message, $code, $previous);
 	}