Metallicity distribution of evolved stars with giant planets (solid line). The metallicity distribution of the giant-planet host CORALIE + HARPS dwarf sample (dashed line) is shown as a reference. The upper panels use the metallicities derived with the TS13–SO08 line list set, while the bottom panels use the HM07 line list. From left to right: the complete sample of evolved stars, the subsample of red giants defined through the log g, and the subsample of the most massive giants.