Steve Hansen has said that referee Jaco Peyper admitted to a series of blunders during last week's record-denying draw with Australia - but added it was no excuse for his team's poor performance.
New Zealand coach Hansen, who sought a meeting with the South African whistleblower after the 12-12 draw in Sydney, said Peyper "put his hand up" and confessed he was wrong with one yellow card and several free kicks.
But Hansen said the All Blacks also had an off-day as they were halted one short of a record 18th straight Test win by the fired-up Wallabies. As much as the All Blacks were outplayed, Hansen said the refereeing did not help.
"I know why we didn't perform at the weekend. There were certain areas of our game we were very poor at," said Hansen.
"We've spoken to the referee about the scrummaging. He put his hand up, said he got the free-kicks wrong.
"The first yellow card (against prop Wyatt Crockett) was wrong -- the ball was out.
"It was a good conversation, I respect the man for his honesty. He's no different than players. Some days you have a bad day. He had a bad day at the office and put his hand up.
"But I've got to emphasise, it wasn't just his problem. We had a hell of a bad day ourselves so we'll forget about him and concentrate on what we can do."
Hansen said he would meet with French referee Romain Poite, who is handling Saturday's match, before kick-off on Saturday.
The All Blacks have made two injury-enforced changes, with Liam Messam and Ryan Crotty coming in for Jerome Kaino and Ma'a Nonu, while Conrad Smith returns to outside centre after missing the first Test due to the birth of his son.