Ospreys forwards coach Chris Gibbes wants his side to improve their game, despite the team being on a five-match winning run in the PRO12.
Their recent form has seen the Welsh region climb up to seventh in the standings which, in a tight table, leaves them eight points off top.
But Gibbes is demanding more ahead of this Friday's home clash with second-placed Leinster, which will be a huge match in their season.
"It's the performance we're after, and even with the big names coming back in we still haven't performed to where we need to be as a team," he told the PRO12 website ahead of the mouth-watering game at the Liberty Stadium.
"As a squad, all of us have to have a good look at that. Clearly we're still climbing the ladder in the Pro12 but we need a good performance to get the result against Leinster.
"We're going up the ladder rather than down which is pleasing, then we chase that top four."
On the injury front, Gibbes played down flanker Dan Lydiate's shoulder injury, while he gave an update on centre Josh Matavesi and prop Dmitri Arhip.
"We're still checking day-to-day with Josh, we're hoping that's not too bad with the calf," he added.
"Dmitri, it's his ribs and those injuries take a while to get right.
"But there's nothing broken with any of them which is good, or torn in the case of the calf, so we've just got to manage it day-to-day.
"Dmitri's going to struggle but the other two we'll assess as we go. Lydiate has got a stinger and he's just working through that day-to-day."