A few weeks ago, a set list for Mary J. Blige’s upcoming tour was leaked online.

Needless to say, Mary was not happy about it.

In a recent interview with PEOPLE, Blige said she took action about the betrayal of trust.

Mary explained, “Yeah, I was pissed, and I fired someone because of it.”

She added, “We worked too hard, and the setlist is the most private thing. It was unprofessional. Obviously, it was somebody within the camp, and they risked their whole life just to get a couple of likes.”

Blige also said, “Only a little bit got leaked, and that’s not even half. People don’t even know what else is coming.”

Mary’s “For My Fans” tour kicks off this Thursday in Greensboro, North Carolina.