Leicester City defender Victor Kristiansen admits they lost their aggression during defeat at Manchester United.
The Dane says Leicester failed to build on an impressive opening 45 minutes.
Kristiansen said: "The first 45 minutes were pretty good. We had some big chances and pushed them high. I think if we managed to score from those chances we would have another game.
"They would get shaky in their build-up play and we would be able to push them even higher, but then they scored some goals and we became passive.
"It was disappointing."