IAN Holloway rued Millwall's "soft underbelly" after Tuesday's 3-1 loss to bogey team Birmingham City at The Den.
The Lions boss said it was a case of deja vu for his side as they created more chances than their opponents only to concede poorly-defended goals.
Millwall found themselves 2-0 down at half time and, despite Lee Gregory's first goal for the club, their resistance was ended when Wes Thomas scored a third.
Holloway said: "We've got to stop defending like that, we've got to stop one long ball getting hit over our head and them scoring.
"We've got a soft underbelly at the moment. These long balls are doing us at the moment.
"They've had four shots and scored three.
"It is very deja-vu, so we've just got a lot of work to do."
Holloway feels his squad has been unsettled by recent injuries to key players.
"It is no coincidence we've lost Nicky Bailey, Carlos Edwards and Lee Martin," he added.
"Where would we be without them in that run last year?
"I've just reminded the players downstairs if we'd have had some of these results in that last eight games we wouldn't be in this division.
"There are a lot of games left for us to keep fighting and show we can compete at this lexapro generic making me dizzy level.
"It is a good job we had that good start to the season because it would be a lot worse now if we hadn't of won those first two games.
"The positives for me were that no-one folded.
"We had a terrible spell where we go in at half-time 2-0 down and we managed to get ourselves back in it – and for all intents and purposes I expected to get something.
"I thought the crowd were great, I thought they loved the fact Aiden O'Brien came on. I thought he did fantastically well.
"It was great for Gregory to get his goal and maybe he is starting to show what he can do for us."
O'Brien was one of two half-time substitutes – the other, Richard Chaplow, played at right back after Justin Hoyte was taken off in a tactical change.
"I thought Chaplow did excellent," Holloway said. "But it's harsh on Hoyte, he has been out for a long, long time and he is the only natural full-back.
"People were screaming at me 'get him off, get him off, get him off' but he has worked really, really hard. It is not his fault Carlos is injured and he isn't match fit."