Scotland vice-captain Preston Mommsen has been ruled out of the World Twenty20 Qualifiers in Dubai with a pelvis injury.
Mommsen will be replaced by middle-order batsman Craig Wallace, who was a member of Scotland's last T20 qualifying campaign in 2012.
Scotland coach Pete Steindl said: "It's a disappointment to lose a player of Preston's calibre. Not only has he been a consistent performer for Scotland in recent times, but he has also been one of our leaders.
“However, we are looking forward to having Craig as part of the squad. He has worked hard over the last 12 months and has improved as a batter. He is a good fit to replace Preston."