We affirm the judgment of the trial court, but we remand this case for the correction' of appellant’s sentence. The present sentence does not specify the amount of credit appellant is to receive for time served as Section 921.161(1), Florida Statutes (1975) requires. Brooks v. State, 349 So.2d 794 (Fla.2d DCA 1977). Appellant need not be present at resentencing.