President Elect Donald Trump, set to take office in three weeks, spoke with new United Nations Secretary-General Antonio Guterres for the first time on Wednesday.

According to a U.N. spokesman, the two world leaders had a “very positive discussion on U.S./U.N. relations,” despite the incoming President’s recent Twitter comments about the validity of the global organization.

“The United Nations has such great potential but right now it is just a club for people to get together, talk and have a good time. So sad!” The President Elect posted to Twitter on December 26th.

Antonio Guterres, the former Prime Minister of Portugal, has also served as the U.N. Refugee Chief, but began his five-year term as U.N. Secretary-General this past Sunday.  Farhan Haq, a spokesman for the U.N. told reporters on Wednesday that Guterres is looking “forward to engaging with the president after his inauguration.”