Comparison of the region around Hα line in RZ Psc spectrum (solid light gray line or red in the electronic version of the paper) with the same line in the σ Dra spectrum (dotted line). The spectrum of RZ Psc was obtained on 2013 November 21 with the FIES spectrograph on the Nordic Optical Telescope (R ~ 46 000). The spectrum of σ Dra (R ~ 42 000) was retrieved from the ELODIE archive at Observatoire de Haute-Provence (Moultaka et al. 2004).