The 23-year-old
sclaffed home in the 90th minute to give Derek McInnes' men the points after Sam Parkin's header had been cancelled out by a Michael Higdon free-kick for the home side.
"I prefer them from that range but it was a wee
sclaff.
My goal wasn't a tap-in - but it was a
sclaff from inside the box!
And Mackie said: "It was a
sclaff but it got us the points and that's all that matters.
There was a touch of fortune about the third 10 minutes from the end as Ikonomou steered Walker's
sclaff into his own net.
McCarthy was getting quite a few openings and should have done better than
sclaff a shot wide in 25 minutes.
The Fife club's bad luck was underlined with the opener when Kirk allowed a corner to
sclaff off his boot and into Andy Webster's path who nodded Hearts ahead.
But under the eyes of George Burley the most gifted of finishers contrived to
sclaff his shot over the bar.
They look so far ahead of Rangers in terms of speed and technical ability - but Celtic still had to rely on a
sclaff from Wilson to see off a depleted Gers side in the last derby.
"It doesn't matter if it's a topcorner finish or a
sclaff - as long it crosses the line I'm happy.