On Tuesday, President Trump hosted Twitter CEO Jack Dorsey in the Oval Office for a closed-door meeting, during which the leader of the free world spent an inordinate amount of time complaining about lost Twitter followers, according to a source familiar with the conversation.

The Twitter chief, for his part, tried to reassure the president that the company’s staff merely wants his follower count to be as bot-free as possible.

This is what the most powerful person in the world was preoccupied with Tuesday.

A large percentage of the meeting, which included senior White House officials such as Trump’s social media director Dan Scavino, was spent addressing the subject of @realDonaldTrump’s follower count. The president stated his belief that he had lost some of his roughly 59 million followers in anti-Trump, anti-conservative Twitter purges, according to a source familiar with the meeting.

Dorsey, according to this knowledgeable source, had to explain to the president that like other Twitter users, @realDonaldTrump periodically loses followers when the site deletes fake or bot accounts. Dorsey even said he himself had lost followers as a result of Twitter’s efforts to delete fake accounts.

During this private gathering in the West Wing, Dorsey assured Trump that the company wants him, and everyone else on Twitter, to have only real followers, according to the source.

Trump also said he’s heard from other prominent conservatives about problems with Twitter, though he declined to name names.

“Trump has repeatedly griped to associates about how Obama has had more Twitter followers than he has, even though—by Trump’s own assessment—he is so much better at Twitter than Obama is.”