A government representative says the 94-year-old's condition is stable.
Presidential spokesman Mac Maharaj said Wednesday that 94-year-old Mandela's condition "remains as it was yesterday."
President Jacob Zuma had joined Mandela's wife, Graca Machel, and other family members in wishing a Merry Christmas to Mandela at his hospital bedside in Pretoria, the South African capital.
Mandela, a leader of the anti-apartheid movement, was diagnosed with a lung infection and also had a procedure to remove gallstones. Officials have said Mandela is improving, but note doctors are taking extraordinary care because of his age.
BET Global News - Your source for Black news from around the world, including international politics, health and human rights, the latest celebrity news and more. Click here to subscribe to our newsletter.
(Photo: AP Photo/Elmond Jiyane-GCIS, File)