Portsmouth manager Michael Appleton praised the performance of new loan striker Wes Thomas in the 2-1 victory over Scunthorpe.
Thomas arrived at Fratton Park on Friday at the start of a month's loan and left the ground a hero after marking his debut with an 89th-minute goal.
Scunthorpe failed to hold on to an early lead given to them by Leon Clarke as Gabor Gyepes levelled, and they lost despite substitute goalkeeper James Severn saving Brian Howard's penalty.
Portsmouth's late victory was their first at home this season and came as a huge relief to Appleton.
"Wes is a good footballer," he said. "I had seen him three or four times last season and he was very good, complementing Izale McLeod in attack.
"I am so pleased to have got that first win under our belts and we need to go to Yeovil next week and build on what we have achieved. I said to the players you have to remember the difference in feeling between winning and losing. You have to want to win and it has to become a habit."