Amplitude of the anomaly in the transit light-curve as a function of the position of planet-spot overlap (0 on x-axis means overlap occurs while the spot is at the center of stellar disk). The values of the amplitude have been normalized to the flux value. The red dotted line and the blue solid line correspond to transit light-curves of a transiting planet with a radius of R_p/R_∗ = 0.15 and a spot with a filling a factor of 1% and 0.25%, respectively.