KENNY Jackett has vowed Millwall will not make the mistake of underestimating giant-killers Luton Town when the sides meet in the fifth round of the FA Cup on Saturday.
The non-league Hatters have already toppled Wolves and Norwich City on their way to the last 16 and will be eyeing another scalp when the Lions travel to Kenilworth Road.
Jackett said: "We will not be underestimating Luton in any way, shape or form when you see them beating the calibre of Norwich and Wolves this season.
"Beating Norwich was a great win. I have watched the game and Luton went to Carrow Road and they played very, very well on the day.
"It was a fantastic performance, they got their goal when they needed to and defended well.
"What we have to do is recognise this opportunity and do our homework, make sure that in no way do we underestimate our opponents, which we don't do.
"After that we have to put on a performance that gives us the best chance of getting through.
"We understand it is cup football and it is all on the day and a one-off occasion, but performances tend to look after results.
"We have to concentrate, stay level-headed and identify the key things we do well and if we do that then the performance I'm sure will be fine."