Hansi Flick feels Bayern Munich's play has become increasingly sloppy, despite the treble winners this week advancing through their Champions League group.
Bayern beat RB Salzburg 3-1 on Wednesday to reach the last 16 with two matches to spare.
The Bundesliga giants are the top scorers in Europe's elite club competition with 15 goals this season, but the opposite end of the pitch is occupying coach Flick's focus.
Editors' Picks
While Bayern are yet to commit an error leading to a goal in either the Bundesliga or the Champions League this season, two mistakes in their past three matches across the two competitions have prompted opposition chances.