Issue including a second and a third level association

This query is not working, pease help. I'm trying to include a second and a third deep-level of association.

Pedido > has_one(products_pedido) > has_one(product_size)

@pedidos = Pedido.includes(:pedidos_payments, :products_pedidos => { :product_size } , :estado, :brand, :customer ).where(:is_quote => false)

Ps: I know products_pedido is mispelled according to ActiveRecord good practices :).