Millwall surged through to the southern section final of the Johnstone's Paint Trophy with a 2-0 win at Southend.
Steve Morison and Shaun Williams were both on target for the Lions at Roots Hall on Tuesday night as manager Neil Harris enjoyed a successful return to his former side.
But, despite the final scoreline, it was Southend who were on top early on with David Worrall forcing Jordan Archer into a stunning save with a well struck 20-yard shot.
However, Millwall soon hit back and opened the scoring in the 34th minute when Morison volleyed home a right wing cross from Carlos Edwards.
The Lions then doubled their lead in the 65th minute when Southend goalkeeper Daniel Bentley fumbled a low 20-yard shot into the bottom right hand corner of the net.
Bentley redeemed himself by making a fine double to deny by George Saville and Lee Gregory in quick succession.
But by then, the damage had been down as Millwall cruised through to take on Oxford in the area final.