Turkish President Recep Tayyip Erdogan on Saturday slammed his French counterpart, Emmanuel Macron, over his policies toward Muslims, saying that he needed “mental checks.”

“What can one say about a head of state who treats millions of members from different faith groups this way: first of all, have mental checks,” Erdogan said in a televised address.

Macron’s proposal to defend his country’s secular values against radical Islam has angered the Turkish government, adding to a growing list of disputes between the French leader and Erdogan.

Macron this month described Islam as a religion “in crisis” worldwide and said the government would present a bill in December to strengthen a 1905 law that officially separated church and state in France.

He announced stricter oversight of schooling and better control over foreign funding of mosques.