The Carthage Eagles ended the dominance enjoyed over the years by the Black Stars when they claimed a 5-4 victory after a penalty shootout, which ensued when they played out a 1-1 draw at 120 minutes.
While admitting Tunisia did not play a perfect game, Sliti has assured they are working on fixing the mistakes from Monday’s tie.
“I think today (Monday), we reacted after those poor group matches we played,” Sliti told Goal
“Like I said earlier, I knew we were going to bounce back. And by the grace of God, it happened.
“We have to continue like that. We must not be carried away by this victory. It was difficult. We need to fix our mistakes, like what happened when we were leading Ghana 1-0.
“We were playing too much at the back. You must not do that. We will continue with our preparation.
“There is a huge game in three days. By God's grace it shall be fine."
Tunisia will face surprise package Madagascar on Thursday in one of Afcon quarterfinals.