Hafia FC and AS Douanes of Mauritania were goalless at half-time in their CAF Confederation Cup first preliminary round second leg at the Stade du 28-Septembre in Conakry on Saturday.
Neither side created the breakthrough during the opening 45 minutes, leaving the tie level at 2-2 on aggregate.
The teams had drawn 2-2 in the first leg in Nouakchott, meaning qualification for the next round remains undecided ahead of the second half.