NEIL Harris is promising that his side will be "ultra-aggressive" against Gillingham at Priestfield this weekend.
The Lions go into the game on the cusp of the top six after Tuesday night's 2-1 win over relegation-threatened Shrewsbury Town.
Gillingham are also in deep trouble, just two points outside the bottom four.
Millwall will take around 2,000 fans to the home of their rivals, with Harris expecting a "red-hot atmosphere" as they look to continue their good form.
"We had two defeats in a row, albeit looking at the bigger picture two in 20-odd games," Harris said. "We had a little blip, everyone else's came and ours came at an unfortunate time.
"We have to make sure we continue the form we're in. It won't just happen at Gillingham, we have to make it happen. It's a huge local derby. We have to be ready for the challenge, ready for the fight, we'll be ultra-aggressive in our approach and play on the front foot.
"It's going to be a red-hot atmosphere. They will be strong and aggressive and they'll be at it given the position they're in.
"The temperament of my players will be correct. They will be ultra-aggressive and totally focused.
"What a great opportunity with five games to go pushing into the play-offs to go to your local rivals and try to get some points."
Image: Millwall FC