Top panel: Scargle periodogram of the QES photometric monitoring data of Qatar-2, before (red line) and after (black line) removing the in-transit points. f_pl corresponds to the planet orbital period; we deem the peak at f₁ to originate from a photometric modulation at the stellar rotational period. Bottom panel: nightly averaged photometric data phase-folded at the P₁ ≡ 1 /f₁=18.77 days period.