Alexander Milosevic was back in the starting eleven after a couple of weeks of injury absence.
After a sleepy first half, it was the midfielder who stepped forward and created the most dangerous chances for the home team.
In the run-up to the second half, he nodded Sebastian Larsson's well-struck corner kick into the post - and shortly afterwards the dividend would come.
Larsson measured a new corner and this time the 29-year-old got revenge and could see how the ball crossed the goal line.
The goal was his first since returning to the Stockholm club.
After the match, Milosevic talked about the frustration in the locker room during the break.
- Oh oh oh.
Today it was loud in there.
But it only shows what a good team spirit we have and that we can have a high ceiling and get out like that in the other, he says to Discovery plus.
Sebastian Larsson was able to put the final nail in the coffin with his 2-0 goal after an opening pass from Henok Goitom and a wild celebration erupted in the stands.
The victory means that AIK passes Stockholm rival Hammarby in the table and goes up to fourth place with 20 points.