Simon Katich concedes that question marks remain over Australia's batting line-up ahead of the Ashes.
Australia surrendered the urn last year, losing the series 2-1 after batting collapses led to defeats at Lord's and the Oval - either side of a comprehensive victory in Leeds.
And they have since been dismissed for low scores in Tests against West Indies in Perth and twice to Pakistan - in Sydney and, most recently, at Headingley.
"Being brutally honest, it's (batting collapse) still been a problem because it's happened a couple of times since the Ashes last year," opening batsman Katich told the Australian Associated Press.
"Until we can actually rectify that in a match, that's going to be still hanging over our heads, and unfortunately you can't replicate it in the nets.
"As much as you try, it's got to happen in Test matches when the pressure is on."
Australia head out to India for two Tests in early October, an unusual way to prepare for an Ashes series on home soil, which starts in Brisbane on November 25.
"There's no ideal situation and you have to get used to it as a player, so we've got to adapt as quickly as possible," added Katich.
"We're playing Test cricket, so if that's not going to be a good enough preparation for us to play a tough series against England, then I don't know what is."