The Storm Blade

I'm currently trying to hand in The Storm Blade quest. When I look at quest log it states "Quest complete - You have delivered the Storm Blade to Petarus and Vanja. Talk to them for your reward."

However when I talk to then there is no reward option and they are asking me to find the sword.

Very confused.

Thank,

HeroSloth.

Solved, because I skipped past the quest zone. The game recognised it as me completing the quest without even discovering the zone.