With nothing but pride to play for, Pompey might have coasted underneath the south coast sunshine.
They were taking on a Gillingham side who are desperate for points in order to remain in League One for another season.
But the hosts instead produced a dominant display that ensured their fine record at Fratton Park continued.
Ronan Curtis’ early opener was cancelled out by Ryan Jackson, only for the Republic of Ireland international to strike again just before the break.
A bullet header from Clark Robertson then wrapped things up and Danny Cowley was delighted with the showing.
The Blues boss said: “It was a really professional performance and I was pleased with our levels – we showed a lot of control and rhythm.
“We moved the ball around well, although were disappointed to be pegged back from nowhere. We were able to wrestle the momentum back, though.
"It was a really professional performance and I was pleased with our levels – we showed a lot of control and rhythm."
“Then we came out for the second half, played some nice football and probably should have been more ruthless.
“Ronan made a really good contribution and Joe Morrell was excellent, controlling the game, while Hayden Carter gets better and better.
“That’s 32 points from the past 16 games now, which represents a great return for this group of players.
“We’re feeling the connection and enjoying playing at Fratton Park ahead of a game with a motivated Wigan side on Tuesday.”
The victory was witnessed by directors Eric Eisner and Andy Redman, who flew over from America earlier in the week.
Cowley said: “We met Thursday and went out for dinner on Friday. It’s great for them to come over and they’ve got such passion for the club.
“It was nice for them to see Fratton Park in a really positive light and it’s going to look magnificent when the work is done, which they have shown unconditional support for.”