Rest-frame UV spectrum of PSO167–13 (red line, adapted from Mazzucchelli et al. 2017b) obtained with VLT/FORS2 and Magellan/FIRE, compared with the average QSO spectrum of Vanden Berk et al. (2001, blue line). A zoom in the C IV region is shown in the inset, where we also report the best fit to the C IV line, and associated redshift and equivalent width. Tentative BAL features might be present at wavelengths bluer than the C IV emission line, which is also particularly weak. PSO167–13 may thus be a BAL QSO and/or a WLQ.