In accordance with the invention, there is a composition comprising a major amount of an aromatic polycarbonate, a minor amount of a polyester selected from the group consisting of polyalkylene terephthalate and polycycloalkylene terephthalate, isophthalate or mixtures of terephthalate and isophthalate, and minor quantities of both an acrylate elastomeric copolymer with a second order transition t