Single frame of the TESS target pixel file with the pipeline mask shown as a dashed red line. The so-called bleed trail of γ Leo contaminates the flux of AD Leo. The graph on the right shows the projection of the pixel column with the strongest contamination (shown as the green line in the TPF). We applied our own light-curve extraction using a customized mask (solid yellow line) and corrected the flux level of the second strongest contaminated pixel (see text).