IMDb has this actor's Anglicized credits as René Wolf listed together with a Dutch sound crewman of the same name. It should be obvious they are not the same person, considering the credits are three decades apart, but this is IMDb we're talking about...

May 2021: Thanks to whatever IMDb contribtor that has fixed this finally, much appreciated. His credit for 5 tombe is still given to the Dutch soundman, though.