Dan Parks is the only change to the side that lost to Italy

Parks, who will be winning his 29th cap, replaces Phil Godman, while Rory Lamont returns to the replacements' bench ahead of Nikki Walker.

Head coach Frank Hadden said: "We've chosen Dan at stand-off as we feel he has the right qualities for this game.

"Rory Lamont has been preferred on the bench as he provides greater cover."

News Conference: Scotland head coach Frank Hadden

Parks started the Six Nations campaign as Scotland's number 10 but was replaced after the opening defeat by England at Twickenham.

Godman occupied the role against Wales and Italy but made a costly error in the opening minute to gift the Azzuri the first of their three early tries.

"Phil obviously hasn't got anything like the experience that Dan has - or Gordon Ross for that matter - but we knew we needed to give him an opportunity at this stage prior to the World Cup," said Hadden.

"We think the experience he has been given is absolutely invaluable, but we feel at this stage and on this particular occasion that Dan is the right guy for the role."

Italy's first win at Murrayfield came as Ireland thrashed England to retain their hopes of clinching the Six Nations title.

SIX NATIONS BLOG Two teams meet at Murrayfield travelling on very different paths BBC Sport's Andrew Cotter More on our Six Nations blog

But Hadden said: "We firmly believe we are capable of upsetting the form book and beating a very good Irish side.

"Nobody would enjoy that scenario more than Scott Murray, who will set a new Scottish cap record on Saturday."

Lock Murray will be making his 83rd appearance, overtaking Gregor Townsend, after retaining his place in the second row.

There had been fears for the fitness of number eight David Callam, prop Euan Murray and winger Chris Paterson after the trio missed training in the early part of the week.

But all three retain their places in the starting line-up.

"Obviously we weren't happy with that performance against Italy, but we feel we can solve that problem with the personnel we've got," added Hadden.

"That group will be more determined than ever as a result of what happened against Italy to prove that they've got what it takes to be very, very competitive; and to give something special to the fans this weekend.

"We're obviously delighted at this opportunity to make amends against a side as strong as Ireland."