Nigeria revived their chances of reaching the last eight of the Africa Cup of Nations after an edgy 1-0 win over Benin in Group C on Saturday.
Yakubu Aiyegbeni converted a 42nd- minute penalty after Squirrels defender Romuald Boco handled in the box.
Stephane Sessegnon and Nouhoum Kobena struck the woodwork for Benin with powerful shots, but Nigeria held out.
Nigeria will advance if they beat Mozambique on Wednesday while Benin must defeat Egypt to maintain hopes.