South Africa are trailing 1-3 in the five-match series, having suffered an eight-wicket defeat in the fourth ODI at Pallekele yesterday.
"There is a lot to gain from the last game. We have only won one ODI here before, we would like to make that two by finishing on a high," de Villiers said in a statement issued by Cricket South Africa (CSA).
"The bowlers have been playing good cricket and we just haven't supported them well enough, there is an opportunity for us to show what we are capable of with the bat."
He further said, "Every match that you play for South Africa is an important one, regardless of the state of the series.
More From This Section
"Every player in the squad takes pride in his performance and they will no doubt want to finish the tour successfully."
Amla's absence left a gap in the Proteas' top order, which is yet to fire collectively in this series.
"I'm certainly happy to be back in the team, especially spending some time in the middle. The first few days were quite tough, there was obviously a bit of pain here and there, but I have enjoyed getting back out there. Even though I made a small contribution, it was disappointing that it wasn't for a winning cause," Amla said.