Simultaneous Kepler and XMM-Newton EPIC PN light curves for the stars showing a simultaneous X-ray andwhite-light flare. The EPIC light curves produced by the EXTraS pipeline with 500 s uniform binning and with the Bayesian blocks adaptive binning are plotted. The flare in the Kepler light curve of KIC 7018131 corresponds to a bump in the EPIC uniform bin lightcurve which is, however, not significant at a 3σ level over the baseline, and not detected with the Bayesian block algorithm.