Hayden Carter could not have wished for a better way to open his Pompey goalscoring account.
The on-loan defender smashed a shot home from 25 yards just before the hour mark of a Fratton clash with Oxford.
It gave the hosts a 3-1 advantage following efforts just before the break from Sean Raggett and George Hirst.
And with United grabbing a late consolation, Carter’s fine strike proved to be an extremely important one.
He said: “The ball just came out and there was nobody around me, so I thought I’d take a couple of touches and try my luck.
“Thankfully it went in – I knew straight away. I think I was over by the corner flag by the time it hit the net!
"The ball just came out and there was nobody around me, so I thought I’d take a couple of touches and try my luck."
“I don’t think I’ll score too many goals like that in my career, so I was certainly going to enjoy that one.”
The result saw Pompey stretch their unbeaten run to five matches and climb one place to 10th in the League One standings.
Carter said: “First and foremost, it was a brilliant way to put right the result at the Kassam Stadium a few weeks ago.
“I think we showed the togetherness that’s in our squad, first after falling behind early on and then to hold on towards the end.
“But it was really enjoyable and hopefully there are more games like that to come and we’ve still got 13 left to play.
“We want to pick up as many points as we possibly can and keep putting pressure on the teams above us.”