Real Madrid midfielder, Casemiro has challenged his teammates to tighten up at the back ahead of the match against PSG.
Los Blancos stumbled yet again in their title defence, playing a 2-2 draw against Levante.
Madrid have been knocked out of the Copa del Rey, losing to Leganes and must look to the UCL to lift a trophy.
“We made two errors and we let in two goals – that’s football,” the Brazilian midfielder told beIN SPORTS in the immediate aftermath of the Levante game.
“If you make errors at the back, the opponent has the quality to punish you.
“We started playing well, with control of the game, but then we made those two errors.
“We have to think game by game, but it’s clear we can’t make those mistakes against PSG.”