 After three seasons at Fiorentina he was signed by Internazionale in 1988 for £3.6m.In his first season at the club, Berti formed a notable midfield partnership with Lothar Matthäus, and was part of a team which won the 1988–89 record breaking Scudetto by an 11-point margin under manager Giovanni Trapattoni, losing only twice, and setting a Serie A points record.Berti himself contributed seven league goals in Serie A that season from midfield.