The conditions for the meeting with Lens were crystal clear.
At least one point and the Ligue 1 title was Paris Saint-Germains.
But it was not completely painless.
Lens kept the bar well into the match but a red card at the beginning of the second half made it easier for PSG.
With 20 minutes played, Lionel Messi nearly put the visitors another one up as he broke through in the middle and fired from just outside the box, but his shot passed just over the bar.
It turned out to be a delicious hit that sailed into the net meshes.
The goal was the Argentine's only fourth league goal in 22 games this season.
Lens received a draw with a few minutes left to play, but it did not matter much.
So it was Messi who pushed home the league title to PSG, the club's tenth of all time.
With four rounds left to play, Paris Saint-Germain are 16 unbeaten points ahead of Marseille (who have one match less played).
Eight of PSG's ten league titles have been collected since Qatari owners took over the club (2012/13, 2013/14, 2014/15, 2015/16, 2017/18, 2018/19, 2019/20, 2021/22).