Fincher considered the novel too infatuated with Tyler Durden and changed the ending to move away from him: "I wanted people to love Tyler, but I also wanted them to be OK with his vanquishing."
Fincher considerou que a novela obsesionábase demasiado co personaxe de Tyler Durden e cambiou o final para distanciarse del: "Quixen que a xente amase a Tyler, pero tamén quixen que estivesen de acordo coa súa desaparición".