Left: Magnitude distribution of sources in the Sirius catalogue, matched to the SDSS catalogue. In green we show the distribution of sources identified as galaxies in the SDSS (note that the bright part is completed with the bright-star catalogue, since SDSS stars saturate at G_Gaia < 14), and in blue the distribution of the point-like sources. The black solid curve shows the magnitude distribution of the Arcturus star catalogue. Right: Examples of galaxies in the Sirius catalogue wrongly identified as bright stars, but properly removed in the new Arcturus version. (Color online)