Robbie Crawford has extended his stay with the club until the end of the season.
The midfielder, who has made 11 appearances in claret and amber, originally joined on loan from Livingston in September.
Robbie will now make the switch to Fir Park on a permanent basis.
“We’re happy Robbie is staying on with us,” said manager Graham Alexander.
“He has shown he has the attributes to be a valuable member of our squad. He adds quality to the group and will be important for us in the coming months.”