The Aussie netted the third in a 4-0 win at Parkhead after boss Gordon Strachan shot down claims that his striker is carrying a few extra pounds. And team-mate Mark Wilson insists McDonald is hungry for more goals.
He said: "Scott has taken a wee bit of stick and we're all pleased for him to score another goal.
"He brings much more to the team than goals. Scott works hard and his hold-up play is great."