Goals from Nathan Thompson and Conor Chaplin ensured that Pompey won their latest friendly at Havant & Waterlooville.
But the result was not enough to satisfy Kenny Jackett, who was left frustrated by a sluggish showing in the opening 45 minutes.
The visitors fell behind to Alfie Pavey’s penalty at Westleigh Park, only for Thompson to drill home a leveller before the break.
And although substitute Chaplin fired in a late winner on a scorching afternoon, Jackett wanted to see more from his troops.
The Blues boss said: “It resembled a training game at stages and the first half team lacked some enthusiasm.
“That’s a basic requirement and there can be no excuses for it, so we must do better and show more.
"We started poorly and didn’t really recover. I was disappointed at the break and felt they could have done a lot more."
“If it was a training session, I’d probably get them back in the afternoon because I was disappointed with the attitude.
“We started poorly and didn’t really recover. I was disappointed at the break and felt they could have done a lot more.
“The second half side did well and there were some good performances, while it was pleasing to get the win.
“There were five or six corners in the first half and we just didn’t look like scoring from any of them when you should be making them pay.
“We put a lot of good balls into the box – particularly from Lee Brown down the left – and there was no desire to beat their centre-halves to the ball.
“That wasn’t the case in the second period and we got into decent situations, with Louis Dennis causing problems behind Conor and Oli Hawkins.
“The partnership up front left you wondering that, with a bit of work, it could be a productive one for us.”
Chaplin’s strike took his pre-season goal tally to three, despite media rumours linking him with a move away from Fratton Park.
Jackett said: “There have been inquiries, but nowhere near the level that would tempt us. I’m looking to build a squad to do better and am not trying to weaken it.
“If any bid comes in for one of our senior players then it would have to be very high and there hasn’t been anything I would consider.”