Millwall 1 Bradford 0
By Richard Jolly
Last Updated: 01/01/70 1:00am
Millwall had not won in their previous seven matches, but striker Harris ended that run as they prepare for their Cardiff clash with Manchester United
His ninth goal of the season came from the penalty spot after Paul Heckingbottom was adjudged to have handled.
Millwall manager Dennis Wise rested himself but his team started brighter and Bradford keeper Alan Combe gather Tim Cahill's shot at the second attempt.
Millwall's Australian midfielder was then lucky to escape with just a booking after he elbowed Danny Cadamarteri when a red card would have meant he missed the cup final.
Bradford finally threatened in the seocnd half when Robbie Ryan deflected Tom Penford's shot off the bar.
But Millwall then took the lead from Harris' spot kick, while Bradford were annoyed by referee Rob Styles' decision, made after consultation with the linesman.