Brazil midfielder Gilberto Silva practiced without incident Saturday and is set to play from the start against Ivory Coast on Sunday.
Gilberto Silva was back among the Brazilian starters a day after missing action in a closed training session.
Images showed that Josue replaced Silva in the main team Friday, and some Brazilian media reported Silva had hurt his ankle.
"All players are fit to play in Sunday's match," Brazil doctor Jose Luiz Runco said.
Coach Dunga lashed out at the Brazilian media for reporting that Silva was hurt, saying it was creating problems where they don't exist.
"Some of you went out there, took photos and said that Gilberto Silva was hurt," Dunga said. "Everybody saw in the afternoon that he practiced and was all fine, so these people need to apologize to the Brazilian fans."
Even though part of Friday's practice was closed to the media, some photographers went to buildings near where the team practised and took photos of the players.
Dunga did not say why Silva didn't participate in Friday's training.
The 33-year-old midfielder is one of Brazil's most experienced players. He started every match when Brazil won the title in 2002 in South Korea and Japan, and helped Brazil win the 2005 and 2009 Confederations Cups, as well as the 2007 Copa America, when he was the team's captain.
The opener against North Korea was his 94th match for Brazil.
Brazil can secure a second-round spot with a win against Ivory Coast on Sunday. It leads Group G with three points, while Ivory Coast and Portugal have one each.
North Korea trails with no points.