Gambia got their debut campaign at the AFCON to a perfect start after pipping Mauritania 1-0 in Group F on Wednesday.
Ablie Jallow emerged the hero for the Gambians as his first half goal was enough to seal the win for his side.
Jallow struck with a left-footed effort from the edge of the penalty area to put Gambia ahead after 10 minutes.
There were also good second-half chances for the small west African country.
Gambia are joined at the top of the group standings by Mali, who edged Tunisia 1-0 in Limbe earlier on Wednesday in a controversy-filled encounter.