--- a/plugins/mod_storage_sql.lua	Sat Apr 01 19:39:20 2017 +0200
+++ b/plugins/mod_storage_sql.lua	Sat Apr 01 19:45:20 2017 +0200
@@ -515,7 +515,7 @@
 	return changes;
 end
 
-local function normalize_database(driver, database)
+local function normalize_database(driver, database) -- luacheck: ignore 431/driver
 	if driver == "SQLite3" and database ~= ":memory:" then
 		return resolve_relative_path(prosody.paths.data or ".", database or "prosody.sqlite");
 	end