At the very beginning of the film, Elena calls Francesco to announce Gilderoy's arrival at the studio. Although the film is set in Italy, when she picks up the phone a continuous dial tone is heard, which is normal for the US or UK; however, the actual dial tone would have sounded very differently in Italy, a country where the phone system has a very distinctive and non-continuous dial tone (consisting of a 425Hz tone with a duration of 0.6sec followed by a 1 second pause, followed by a 0.2 sec tone then a 0.2 sec pause, repeated in a loop until the first digit is dialed).