Greta Thunberg responded to Donald Trump today, who claimed yesterday that she needs to see a doctor because she has “anger issues,” implying that perhaps he is the one facing problems.

“I heard that Donald Trump once again shared his flattering opinions about my character, and I appreciate his concern for my mental health,” the 22-year-old Swedish activist wrote in an Instagram post on Tuesday morning.

“I would kindly accept any advice you have for dealing with these so-called ‘anger management issues,’ as — judging from your impressive track record — it seems you might be dealing with them yourself,” she added.

The U.S. president was asked by reporters in the Oval Office about the deportation of Greta Thunberg and other pro-Palestinian activists who tried to break Israel’s naval blockade of Gaza.

“She’s just a troublemaker,” Trump said, referring to the Swedish activist. “You mean she’s not into the environment anymore, now she’s into this?”

“She has an anger management problem, I think she needs to see a doctor,” Trump continued. “She’s so angry, she’s so crazy.”