Scotland will miss the services of Matt Fagerson for the final game of the Six Nations game against France in Paris following an ankle injury.
Fagerson sustained the blow during a training session and now will be replaced at number eight with Nick Haining replacing him in the starting line-up.
Meanwhile, Haining's place in the bench has been taken by Glasgow Warriors' Ryan Wilson.
"Matt suffered an ankle injury in our final training session this week before we headed to Paris," said Scotland head coach Gregor Townsend in a statement released.
"It's disappointing for Matt, who has been playing consistently well throughout the championship.
"We were able to call on Ryan at short notice given Glasgow Warriors had already conducted two COVID-19 tests this week, which meant he was safe to travel and join up with the squad.
"Given Ryan's test match experience and his form this season, we believe he will grab his opportunity on his return to the squad. And if he comes off the bench tomorrow he will achieve his 50th cap, which is a significant milestone."
Scotland are positioned fourth in the Six Nations table with two wins from four matches.
Scotland XV: 15 Stuart Hogg (c), 14 Darcy Graham, 13 Chris Harris, 12 Sam Johnson, 11 Duhan van der Merwe, 10 Finn Russell, 9 Ali Price, 8 Nick Haining, 7 Hamish Watson, 6 Jamie Ritchie, 5 Grant Gilchrist, 4 Sam Skinner, 3 Zander Fagerson, 2 George Turner, 1 Rory Sutherland
Reserves: 16 David Cherry, 17 Oli Kebble, 18 Simon Berghan, 19 Alex Craig, 20 Ryan Wilson, 21 Scott Steele, 22 Adam Hastings, 23 Huw Jones