Assistant coach Neil Jenkins insists Wales will not underestimate Scotland at the Millennium Stadium on Sunday.
Wales underlined their status as potential RBS Six Nations champions with a rousing 23-21 victory over Ireland in Dublin.
That win came less than 24 hours after Scotland had started their challenge with a disappointing 13-6 defeat to England at Murrayfield.
And despite the differing fortunes of the two sides, Jenkins is expecting Andy Robinson's men to come out all guns blazing.
"Sunday will be a very tough game for us. If we take Scotland lightly we will come off second best," he said.
"We have not forgotten two years ago when we were very lucky to win. We had an incredible spree of points in the last five minutes, but we probably should not have won that game.
"We expect a very tough game, and we will need to be on edge and ready to win it."
Wales will find out on Wednesday if Bradley Davies will miss the encounter, with the second row facing a disciplinary hearing in London following his tip-tackle on Ireland forward Donnacha Ryan.
Davies could face a lengthy ban for the offence, meaning Ryan Jones or uncapped Lou Reed could move to the engine room against Scotland.
The New Zealand All Blacks are wearing this new rugby jersey during their training sessions. Get in the Gear.
Price: $74.99 Buy at World Rugby ShopHeineken Cup holders Leinster will defend their title against Ulster on May 19. Get in the Gear!
Price: $89.99 Buy at World Rugby ShopUlster will look to win their first Heineken Cup title since 1998/99 on May 19 against Leinster.
Price: $19.99 Buy at World Rugby ShopA World Rugby Shop exclusive in the U.S., Stade Francais rugby gear. Make a statement.
Price: $74.99 Buy at World Rugby ShopmiCoach is being introduced in the game of Rugby. The latest addition to the soft ground collection is the adizero RS7 Pro II Rugby Boot!
Price: $199.99 Buy at World Rugby Shop
Rugby Match Ticker
Follow LIVE rugby action from around the globe with Rugby Rugby!
The World Rugby Shop has the best selection of official and team rugby gear from around the globe. Shop for your rugby gear today!