errore: Every derived table must have its own alias

[felixaf21]

Ciao ragazzi in una query effettuata mi esce l'errore scritto in oggetto (Every derived table must have its own alias).

Non riesco a capire dove sbaglio!
ecco la query:

                   SELECT p.*
                        FROM product AS p
                        INNER JOIN (
                            SELECT o.*
                            FROM option_gallery AS o
                            ORDER BY o.id DESC
                            LIMIT 1 )
                        ON p.id = o.product_id
                        WHERE p.products_id = 55
                        LIMIT 18