Accused also of Pelagianism, he was expelled from Gaul and taken to Africa, where, under the influence of St Augustine, he was convinced of his error. Around 426, he publicly retracted his heresies at a synod of bishops in Carthage. In the *Libellus emendationis*, his retraction was communicated to the bishops in Gaul, accompanied by a letter from St Augustine.
Bibl.: *Il Libellus emendationis* in PL 31, 1221-32; cf. Gennadius, *De vir. illustr.*, 60 (59).