STEVE Lomas says Millwall must make opposition teams work harder for their goals after giving up a "cheap" equaliser against Nottingham Forest in midweek.
Nathaniel Chalobah's simple header from a corner in the 2-2 draw proved to be a source of great frustration for the Lions boss.
But Lomas was pleased with most others aspects his side's performance and has called for a repeat showing when Wigan visit The Den on Saturday.
"If somebody whacks one in from 30 yards, or beats three or four men and scores, then we accept that," he said.
"At times you are going to come up against quality players who are able to produce that – like Andy Reid did with the first goal.
"Obviously free headers in the box are not good enough. We put together two very good moves for our goals and then gave one away cheaply, which was disappointing.
"Wigan have a massive squad and it is full of very good players. We've got to replicate the levels we hit on Tuesday night whilst at the same time cut out the silly buydiazepambest.com goals."
It looks increasingly likely that the Latics, who are currently in talks with Brentford's Uwe Rosler about becoming their new manager, will be taken by caretaker Graham Barrow.
Barrow was placed in charge following the sacking of Owen Coyle last weekend and Lomas admits he was surprised to see the Scot lose his job.
"I do think it was a bit strange," he said. "Roberto Martinez had been there for a long time and there had been a big turnover of players since Owen took over.
"The situation of having to play in Europe on a Thursday and in the league on a Sunday might have knocked them out of a routine."
Scott Malone has warned that a change of management is likely to galvanise the visitors.
"Sheffield Wednesday got rid of Dave Jones and won 2-1 in midweek, which shows how a change can pick a team up," Malone said.
"People who weren't in the team are now thinking they can impress the new manager. It will be a tough one. They played on Wednesday so we've had an extra day's rest."