The Black Stars picked a 1-0 win at Stade de Port-Gentil on Tuesday, but many have been left criticizing the team's performance in the second half.
The four-time champions face Mali in their second game on Saturday.
"We were found wanting in the tactical and technical aspect of the game against Uganda," Akenteng told Asempa FM.
"The Ugandans were more efficient in terms of their tactics than we were on the day.
"We played well in the first half, but they dictated [the pace of] the second half.
“We have taken notice of that and so we are working on that. The team will be different in our next game against Mali.
"Mali is also a very strong side, so we are going to approach our next game with all seriousness.
"[We have taken into consideration all the] mistakes of the last game, and so Ghanaians would see a different Black Stars in our next game."
Ghana will almost certainly book a place in the quarter-final with a win on Saturday, making the final group fixture against Egypt a formality.
Coach Avram Grant will, however, have to do without left-back Baba Rahman, who has been ruled out of the remainder of the tournament following an injury suffered against Uganda.
The Black Stars last won the continental title in 1982.