This study examines French-speaking listeners' perceptual adaptation to altered informativeness of acoustic cues signalling the voicing contrast. We attempt to condition a shift of perceptual attention from a primary cue to a secondary cue. Listeners were exposed to stimuli in which the distributional characteristics of either the primary or secondary cue were altered: either informativeness of F0 was increased, or that of VOT was decreased. When lexical feedback was given, increased informativeness of F0 led to listeners' increased use of high F0 in identifying voiceless plosives, whereas decreased informativeness of VOT led to increased use of low F0 in identifying voiced plosives. We suggest this asymmetry is due to general auditory mechanisms in the perception of F0 and VOT. Our findings highlight the importance of non-distributional characteristics such as auditory mechanisms and lexical knowledge in cue (re-)weighting, shedding light on how a secondary cue is phonologised in sound change.