The Potters ended an eight-game winless streak with a confident win over Gus Poyet's Sunderland at the Britannia Stadium
Goals from Charlie Adam and Steven N'Zonzi granted the Potters a 2-0 victory over the Black Cats at the Britannia Stadium and Walters believes that it was a "huge" result for the club.
"It was a massive game for us for sure, because they were a few points behind us and we were sitting in an uncomfortable position ion the table," he told the club's official website after the game.
"It was huge and it was absolutely imperative that we got things right today, which thankfully we did."
A controversial red card issued to Sunderland defender Wes Brown after 36 minutes meant that Stoke played against 10 men for most of the game, but Walters insists that it was a difficult game to win and says that the focus is now on their next game against Everton.
He said: "Some people may look at it and take it as a given that we would win, but they are a good team, they have good players and they arrived here on the back of a great victory against Manchester City.
"We needed the three points and now hopefully we can take our performance into another tough game at Goodison Park next week and look to get more points there."