Juventus midfielder Sami Khedira admits they're defensively struggling.
Juve are now five points behind Serie A leaders Napoli after defeat to Lazio.
"Obviously, as with every game, we've rematched the match against Lazio together," Khedira told Sky Italia.
“We noticed that the second half wasn't up to the level of the first, above all from a defensive point of view.
“At the moment what we have to do the most work on is concentration, what happened in Bergamo [against Atalanta] and against Lazio wasn't positive, these are teams who will punish you in a lethal manner if you let your level drop, which is exactly what happened.
“If you're ahead you can't give up, you have to look for more goals until you're sure that you've won.
“We're conceding too many goals, it's not a question of the formation, but how we move together on the pitch."