Absolute magnitude light curves of AT 2020cuj (points) in NGC 1614 corrected for the host galaxy extinction of A_V = 2.8 mag, estimated with a fit to the light curves of the Type IIP SN 2013ej (solid lines, Yuan et al. 2016). The epoch 0 is set to the estimated explosion date of SN 2013ej. Since the Gaia light curve is not template subtracted, it is likely that it contains flux excess from the luminous host background, which has an effect, particularly on the late-time data points.