Nigeria beat Guinea-Bissau 1-0 to progress to the last 16 at the 2023 Africa Cup of Nations (AFCON).
The only goal came when Opa Sangate diverted Moses Simon’s cross into his own net seven minutes before the break.
Both sides had goals ruled out in the second half for offside, while Nigeria striker Victor Osimhen also had an effort disallowed for handball.
Jose Peseiro’s side finished second in Group A behind Equatorial Guinea, who beat hosts Ivory Coast 4-0.
The Super Eagles will face the second-placed side from Group C, Senegal, Guinea, or Cameroon, in the last 16 on Saturday (20:00 GMT).