St Johnstone will have Peter Pawlett available for their next two matches after parent club Aberdeen extended the midfielder's loan until 20 January.
Manager Steve Lomas told the Perth club's official website: "I'm grateful to [Aberdeen manager] Craig Brown for agreeing this.
"I can understand that he doesn't want to commit to anything beyond that for the moment.
"It will be good to have Peter available for the two games."
Saints host Dundee on Wednesday and, after the Scottish Premier League's winter break, visit Motherwell on 20 January.