Frank Lampard is adamant he can shore up Chelsea's leaky defence.
Chelsea have shipped 63 goals in boss Lampard's 43 matches at the Stamford Bridge helm - the worst return of any Blues manager.
Lampard admitted he knows all about that unwanted statistic, but also pointed out a contrary ratio of his own to underscore just where his side must tighten up.
Chelsea will host Europa League champions Sevilla in tonight's Champions League Group E opener, with Lampard demanding quick-fire defensive improvements following Saturday's 3-3 Premier League with Southampton.
"In terms of the goals conceded, I am aware of that stat - but the other stat is that since I've been here we've conceded the second-least shots in the Premier League, I think behind Manchester City," said Lampard.
"That helps sometimes narrow down some of the issues, and the issues are that we don't concede many shots on our goal, but when we do, we concede goals.
"And it's something we're aware of, and we're aware of when you look at recruitment, but, more importantly than that, when you work every day on the pitch with the players to make sure that when we hopefully set up well, we don't concede many chances.
"But the chances we do concede, we let in too many and that's something we work on specifically.
"And of course we want to concede fewer goals, as all teams do at the moment.
"Teams are conceding a lot of goals in the Premier League and we are all in a similar position to a degree with that at the moment.
"But it will always be something we work on as much as we do our attacking play.
"I wouldn't say my DNA is to be a natural attacking manager; every manager wants to build a balanced team and one that can be strong in both defence and attack.
"We're working hard defensively and we're always trying to improve on that.
"The main thing particularly for ourselves is that there has been a lack of preparation which if you're working with new players or small changes, that takes time. And hopefully that will keep improving now."