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We found that the 1899 nova V606 Aql currently shows dwarf nova outburstswith a typical cycle length of 270 d and amplitudes of ~1.5 mag using PublicData Release of Zwicky Transient Facility observations. The low mass-transferrate in quiescence has been suggested to explain the large eruption amplitude(Tappert et al., 2016), and the present detection of dwarf nova outburstssupports this interpretation. The transition to the dwarf nova state more than100 yr after the nova eruption gives credence to the hibernation scenario. Theabsolute magnitude estimated from dwarf nova outbursts suggests that V606 Aqlshould have been a fast nova and the presence of high excitation lines inquiescence would be explained by the presence of a massive white dwarf.

V606 Aql (Nova Aquilae 1899) is now a dwarf nova