The manager previews Saturday's visit of Rochdale
Neil Harris believes The Lions need to have the "mentality and desire" to bounce back from last Saturday's defeat to Southend United with a positive performance and result against Rochdale at The Den this weekend.
Millwall were beaten 3-1 at Roots Hall in what was only their second League defeat of the campaign so far and after the game the boss bemoaned his side's defending and inferior aggression in both boxes.
Harris, who will be without suspended left-back Joe Martin, is expecting to see a response from his squad having been enthused by their work in training during the build-up to Saturday's fixture.
"You have to have the mentality and desire to respond and I've seen that in the players this week.
"It's nice to be back at The Den where we have had a good run of form so we are looking forward to it.
"The disappointment from last Saturday lingers for a little bit of time but then it becomes about learning, education and making sure that we're better after a defeat.
"We've got a really tough game ahead against Rochdale, who will be buoyed by their first League victory last week. They will come with momentum and spirit about them and Keith Hill's side can play direct but also pass the ball, so it's a good challenge."