Gary Waddock spoke of his delight after a rare Pompey away victory.
A 2-1 triumph at Mansfield this afternoon was only their third in League Two this season.
It arrived in the final fixture on their travels during a disappointing 2014-15 campaign which has also yielded wins at Oxford and Cambridge United.
A Matt Tubbs penalty and Jed Wallace’s 17th goal of the season put the Blues into a 2-0 lead against an opposition reduced to 10-men following Ritchie Sutton’s sending off.
Jack Thomas’ goal set up a nervy finale but Pompey held on for a victory.
Caretaker boss Waddock said: ‘A win’s a win, it’s away from home and I thought we played extremely well during the course of the first half when we controlled it.
‘We identified an area where we could get at them and it worked straight away with the penalty.
‘I was pleased with the first half but we made it much harder during the course of the second half and afterwards I said to the lads we needed to manage the game better.
‘I just thought in the final third of the pitch in both halves we didn’t take enough care in possession of the ball, but I’m not complaining, I am delighted to have a win away from home.
‘It’s something for fans to go away with after difficult fixtures and results during the course of the season.`