This squib is motivated by two observations about verum focus. First, despite the intuitive idea that a verum-focused proposition vf(p) requires a salient alternative ¬p (see e.g. Goodhue 2018), there are cases where this is not so clear. Sometimes, a speaker can use verum focus in order to express endorsement of an interlocutor’s opinion, in which case it is not obvious that a negative alternative ever has to be uttered, or even inferred. Second, sometimes a linguistic expression appears to act as an antecedent for a subsequent verum focus, but only when the antecedent and verum-focused proposition are in a certain logical configuration. To account for these and other data, I argue for a condition on using a verum-focused proposition stated in the framework of update semantics.