This really is one of the more peculiar and ill-suited retitlings of a movie for television. With an original title meaning ALWAYS TROUBLE WITH THE BED, and accurately described (as per the 1973 clipping below) in tv listings as a 'comedy', there's just no good reason for the film to be saddled with a horror-thriller title like NIGHTMARE, which is surely the only thing that earned it a mention in John Stanley's Creature Features guides. It goes without saying that the movie goes unmentioned under its original title in any German-language genre guides.