Top: individual follow-up transit light curves for WASP-88 b. Bottom: combined follow-up photometry for WASP-88 b. The observations are shown as red points (bin width =2min) and are period-folded on the best-fit transit ephemeris. Each light curve has been divided by the respective photometric baseline model (see Sect. 3.2). For each filter, the superimposed, solid black line is our best-fit transit model. The light curves are shifted along the y-axis for clarity.