Madonna Heads to Malawi for Charity Work

By KC Baker

04/12/2007 at 07:00 PM EDT

Madonna is on her way to Malawi for charity work – not to adopt another child, the singer's rep tells PEOPLE.

"Madonna is indeed going to Africa to continue her work with the Raising Malawi organization," says her rep Liz Rosenberg. "She is overseeing the building of a children's health care center. "

Her adoption of David Banda from Malawi last year caused a worldwide stir. A judge in Malawi has permitted a coalition of 67 human-rights groups to move forward with their legal challenge to the adoption and allow them to help decide if the singer is a fit mother.

Although Madonna has said her efforts to adopt David were so difficult that she considered giving up, her return to Malawi sparked new rumors that she was planning to adopt another child.

But her rep says: "She is absolutely not adopting another baby. I know that has been a rumor ever since she began the adoption process for her son David but it just isn't true. "

Madonna, meanwhile, has been back to the recording studio – this time working working with Justin Timberlake, who is producing, says Timberlake's rep.