Continuity mistake: When Joseph is in the slave market his clothes are dark, but when he is lead into Potiphar's house for the first time, his clothes are white. They return to a dark colour before they are thrown in the fire.
Audio problem: At the end of the film when Joseph reveals himself to his brothers, he says "I am your brother, Joseph." However, if you look at his lip movements, you'll see that he does not say "Joseph."
Other mistake: When Potiphar is buying the horse, Zuleika calls him Joseph when calling him to come fan her before they then ask him for his name. (00:30:00)
