"Jeopardy!" Screws up Bowling Question

A question earlier this week asked about the #1 pin in bowling, the answer of which was, of course, the "headpin". Alex accepted "kingpin" as correct, which it wasn't. I kept waiting the whole game for the judges to correct Alex on this, and they never did! The kingpin is, of course, the five pin, not the one pin. I guess none of the judges are bowlers!