Vernon comes in for Horne
Richie Vernon will replace Peter Horne at outside centre for Glasgow Warriors when they host Toulouse in the European Champions Cup on Saturday.
The 27-year-old impressed off the bench in the 19-11 defeat at the Stade Ernest Wallon last weekend and he has done enough to keep his place for the return game, with Alex Dunbar moving to inside centre.
Glasgow go into the fixture three points behind Pool Four leaders Toulouse and know a win could take them top and also keep the chasing pack at arm's length.
Warriors head coach Gregor Townsend believes his side are well-placed to do just that and he is confident they learned their lesson from the loss to Toulouse last week.
"This is a massive game for the club and we'll need a very good performance to get the win, against one of the top sides in Europe," he said.
"We learned a lot from last week's defeat and we've been working hard to put this knowledge to the best possible use.
"We have a team that is capable of playing both a physical and high tempo game, and a strong group of replacements that can make a real impact.
Townsend makes two other personnel changes this weekend, with Tim Swinson coming in for Leone Nakarawa at lock and Ryan Wilson replacing the injured Chris Fusaro in the back-row.
Wilson starts at blindside, with Rob Harley switching to openside for the clash at the Scotstoun Stadium.
Sean Lamont starts on the bench and will make his 50th European appearance if he enters the action at some point.
Euan Murray is also among the substitutes as he returns to the matchday squad after recovering from a groin injury.