Nigeria gaffer, Gernot Rohr has hailed the Super Eagles team, but insists they must keep working hard.
Super Eagles beat highly rated Poland 1-0 away from home, to follow up their 4-2 win against Argentina.
Rohr has warned against riding that wave, and has charged his men to keep working hard for the World Cup.
“We’ve seen a lot of good things and some things we must work on before the World Cup in Russia,” Rohr was quoted as saying on BBC Sport.
“Friendly matches provide a great opportunity to see everything about your team.
“It is not really the same as a World Cup game. Our preparation is still a work in progress to be ready.
“We know winning friendly matches could give us false hope but we want to keep working hard.”