diff --git a/phpBB/install/convert/convertor.php b/phpBB/install/convert/convertor.php
index 54ec85fd21..ab87243952 100644
--- a/phpBB/install/convert/convertor.php
+++ b/phpBB/install/convert/convertor.php
@@ -224,7 +224,7 @@ class convertor
 			trigger_error('NO_SUCH_SEARCH_MODULE');
 		}
 
-		$convert->fulltext_search = new $search_type($auth, $config, $db, $phpbb_dispatcher, $user, $phpbb_root_path, $phpEx);
+		$convert->fulltext_search = new $search_type($config, $db, $phpbb_dispatcher, $user, $phpbb_root_path, $phpEx);
 
 		include_once($phpbb_root_path . 'includes/message_parser.' . $phpEx);
 		$message_parser = new \parse_message();