[Mg/Si] versus [Fe/H] for our sample (blue points), where mean errors on [Mg/H], [Si/H], and [Fe/H] are similar to each other (~0.09–0.10 dex; as a reference, typical errors in Mg, Si, and Fe abundances are represented in the bottom right corner of the plot). Overplotted in grey and orange are the results by Biazzo et al. (2022) and Adibekyan et al. (2015), respectively. As in Adibekyan et al. (2015), squares and circles represent targets hosting only planets with M_p < 30 M_E (low-mass planets) and M_p > 30 M_E (high-mass planets), respectively. Within our sample, we mark with diamonds those targets hosting both high- and low-mass planets and with crosses targets whose planets have not a mass estimate yet. Dashed lines represent the solar abundances.