Serena Williams defeated Garbine Muguruza Saturday to win her sixth Wimbledon title and her second “Serena Slam.”

serena celebration

Celebrity fans were pumped:

But not everyone else was as supportive. In fact, one man responded to J.K. Rowling’s tweet above with this:

Rowling wasn’t having any of that, though:

Well, then.

As they say on the tennis court, @diegtristan8, Rowling just served you.