Pompey have collected a solitary point from their past three Fratton Park outings.
And Kenny Jackett knows that record has to improve if they are to realise their dreams of automatic promotion.
His side currently sit fifth in the League One standings, but victory against Swindon could see them end Tuesday night in the top two.
And while the lack of fans has undoubtedly had an impact on home form, Jackett wants to see them put it right.
The Blues boss said: “We obviously had mixed feelings after drawing with Plymouth on Saturday because you need wins on a regular basis if you want to keep pace with the top sides.
“But then it looked like the game was going to slip away from us completely and credit to the players for scoring two late goals to get us a point.
“It was similar to the Lincoln match when we were down to 10 men, but finished with a real flourish to try to get back into it. That does show resilience and character.
"There have been too many points dropped at home and it’s not like our preparation has been different compared to away fixtures."
“We want to get back to winning ways at Fratton Park, though, and I do think the record there would be different if fans were present.
“There have been too many points dropped at home and it’s not like our preparation has been different compared to away fixtures.
"We have to do everything we can to address it and try to make sure we start some good form at our ground against Swindon.”
Pompey’s opponents claimed the fourth tier title last term, but currently find themselves in the relegation zone.
Jackett said: “They had an excellent season and will now be fighting to maintain the League One status that they fought so hard for.
“It’s a much-changed Swindon side now, but we know they’ll be very dangerous because they’re looking to push on and climb the table.”
Pompey will be without Michael Jacobs, who limped off the pitch with a tight hamstring at the weekend.
Jackett said: “Michael certainly won’t play against Swindon and he went for a scan on Monday, so we’ll have to see the result of that.