Warren Gatland’s side slipped to a 33-19 defeat to England at Twickenham last weekend, but North insists Wales will bounce back this weekend.
A sold-out Cardiff crowd will watch the second meeting between the two sides in the space of six days.
“First and foremost we are obviously disappointed with the defeat,” said the 27-year-old North of the Twickenham clash.
“We went out to win a Test match and we were caught out a bit. We have had a good preparation and a good amount of training, but the first game is always a bit rusty.
“For us it’s the first step in the build-up to the World Cup and we have a few more to get things right.
“But we are not panicking, it is what it is. We have to address it and we have a week to get it right for the next Test and we go again.
“You never like losing games, but it has put us in a good place to mentally focus and work out where we need to go. This is what these warm-up games are for.
North himself enjoyed a fine game as he crossed for his 37th Wales try in the second half against England.
And he insists Wales’ shortcomings at Twickenham are easily fixable.
“In the first half we got caught slowly as a squad,” he said.
“In the second half we defended a lot better and got a bit more shape, but that last little pass went astray and we showed our rustiness and left a few tries out there.
“We needed to close it out, but we are not hugely worried. It is disappointing, but we have a good foundation for this week and the games coming up.”
