The Hollywood icon passed away on Wednesday after suffering a cardiac arrest, just weeks before he was due to begin production on Morella, based on a short story by Edgar Allan Poe.
But re-casting the role won't be an easy task - according to a movie representative, filmmakers are looking for an actor "on (Curtis') level".
However, Curtis' memory will live on in the film - producers plan to pay tribute to the Some Like It Hot actor with the finished product.
The rep tells Entertainment Weekly, "We are very saddened by the loss. Obviously, we will dedicate the film to his memory."
Curtis was laid to rest in a memorial service in Las Vegas on Monday (04Oct10).
Shooting on Morella, in which Curtis was due to play oil tycoon Frank Phillips, is due to commence on 7 November (10).