The four main characters of the film have the same first names as the actors who play them, but their surnames that Aleksey sees briefly in a school photo album are different: Aleksey Chadov is Aleksey Nakhimov in the film, Artur Smolyaninov is Artur Donskov, Konstantin Kryukov is Konstantin Rudovsky, and even Timati, who plays himself, is called Timur Vinogradov while Timati's real surname is Yunusov.