We provide a documented record for the Acre Antshrike Thamnophilus divisorius, an endemic species of Serra do Divisor, in the Amazon Forest of Peru. Four birds responded to playback and a female was captured in mist-nets. This is the fourth documented record of this species in the world, 28 km north of the nearest previous record. We comment on the current distribution of this species between Peru and Brazil and the possible threats that it might face in the near future.