Supermassive black holes have been detected in all galaxies that contain bulge components. Bigger black holes are found in bigger bulges, implying that black-hole growth and bulge formation regulate each other. Reports of a similar correlation between black holes and the dark matter haloes suggest that unknown, exotic physics controls black-hole growth. Here it is shown that there is almost no correlation between dark matter and parameters that measure black holes unless the galaxy also contains a bulge. It is concluded that black holes do not correlate directly with dark matter, and that black holes coevolve only with bulges.