Norwich striker Steve Morison is asking his team-mates to stop conceding so many goals after letting in three more on Saturday.
The Canaries were beaten 3-2 by Aston Villa, a week after shipping three against Blackburn at Carrow Road.
Paul Lambert's side have failed to keep a clean sheet this season but are ninth in the Premier League mainly due to their attacking threat.
Morison, Grant Holt and Anthony Pilkington have scored a combined total of ten goals in the league this term.
But it was their defensive play that acted as their Achilles heel in the Championship last season, with Burnley being the only top-ten side to have conceded more goals.
Norwich face Arsenal after the international break, but Morison is calling on his side to improve at the back.
Let ourselves down
He said: "We have let ourselves down over the last couple of weeks.
"We have conceded too many goals as a team and we need to stop that.
"The one thing you take from everything is that this squad has great heart. We are never beaten.
"But if you go home happy from losing 3-2 at Villa there is something wrong."