Perkins was unable to locate the lines where Welles dubbed his voice. British actor Peter Sallis was brought in to dub Max Haufler's dialogue, which had been delivered in Hungarian, into American-accented English.
Due to Perkins' inability to locate Welles' voice recordings for his lines, the British actor Peter Sallis stepped in to dub Max Haufler's dialogue, which was initially delivered in Hungarian, into American English.