Hansi Flick admitted Bayern Munich made life difficult for themselves in the DFL-Supercup win over Borussia Dortmund that completed a quintuple of trophy triumphs.
It took a late Joshua Kimmich goal to give Bayern a 3-2 victory at Allianz Arena as last season's Bundesliga, Champions League and DFB-Pokal winners landed more silverware.
Bayern had claimed a double already this term after clinching the UEFA Super Cup, so Bayern now can point to owning five current titles.
But what at one stage looked like being a routine win turned into a testing contest for Germany's all-conquering side on Wednesday.
Dortmund were in trouble when Bayern surged 2-0 up in 32 minutes through goals from Corentin Tolisso and Thomas Muller, but Julian Brandt and Erling Haaland struck to bring the teams level heading into the final half-hour.
Kimmich pinched an 82nd-minute winner after robbing Thomas Delaney of possession and exchanging passes with Robert Lewandowski, finding the net at the second attempt with a desperate flick at the ball after his initial shot was blocked.
"We wanted to win the game, but it was really not so easy. We deserved to lead 2-0 and then made life difficult for ourselves," head coach Flick said.
"However, what counts for me is that we won the game and everything else is something that we'll want to do better on Sunday.
"Joshua Kimmich has a very special mentality, enormous qualities. That's why he's on a really good path to being one of those players who shape this club."
Bayern's Sunday assignment in the Bundesliga is a home game against Hertha Berlin.
Kimmich was relieved to get his hands on another trophy, after Dortmund threatened to take the win.
It took a fine save from Bayern goalkeeper Manuel Neuer to deny Haaland a goal that would have put Lucien Favre's Dortmund side 3-2 ahead.
"In the end we have the trophy. That feels good," Kimmich said, quoted on Bayern's website. "We fought for the cup, even if it wasn't our best game."
Like his boss and the match-winner, Neuer recognised Bayern were not at their most impressive.
Neuer said: "You know that you're playing against a strong team, so something can always happen and we saw that today. It was our fault that we let Dortmund back into the game."
"You can't always assume you're going to score three goals, but at the end Joshua Kimmich did well," captain Neuer added.
There was regret in the Dortmund camp over the chance of a trophy gone begging.
Goalscorer Brandt said: "I think we let in two annoying goals in the first half. Unfortunately, we didn't do well there. We then got the next goal and we then had chances that we couldn't take."