Nigeria's Super Eagles took all three points, courtesy of two goals scored from the penalty spot in their 15th encounter against Liberia.
The first goal was scored in the first half by Napoli's forward, Victor Osimhen, and the second strike came late in the second half from substitute, Ahmed Musa.
Coach Gernot Rohr recalled both Wilfred Ndidi and Alex Iwobi into his starting 11 after the duo missed the matches against CAR in October.
The much-heralded return of Odion Ighalo did not result in inclusion in the matchday squad.
The Eagles had better control of the game in the first minutes of the second half and had a scoring opportunity a minute after the interval but Moses Simon’s free-kick was tame and straight at the goalkeeper.
A mistake from William Troost-Ekong-Ekong in the 72nd minute almost afforded Liberia the chance of an equaliser but the Liberian attacker did not control the ball well and it ran harmlessly to Okoye.
Osimhen thought he had won a second penalty in the 81st minute when his left leg was clipped but the referee waved play on. The Napoli forward was undaunted and duly won a second spot-kick in the 92nd minute after he was wrestled to the floor by the Liberian goalkeeper.
Musa, who had come on for Iheanacho in the 86th minute steppe forward and converted.
The Eagles have 12 points and sit top of Group C, ahead of their next opponents, Cape Verde.