Recently-appointed Dumbarton manager Jim Chapman has added two players to the Third Division outfit's squad.
Mackie hopes to add to the Sons strike rate
Chris Mackie, a 22-year-old striker, arrives from Second Division club Alloa Athletic on loan.
And Axel Orrstrom, a 21-year old Finnish midfielder, has also joined until the summer.
Chapman told his club website: "Chris will give us additional options up front, whilst the Finnish lad we've had on trial and I've seen enough."
Orrstrom is a former Finland youth international.