Napoli coach Rafa Benitez insists one bad result cannot undo all the hard work done by his team.
The Partenopei suffered a shock defeat on Sunday against Chievo but the Spaniard believes the result was just a one-off.
"A result doesn't change the complexity of a game," Benitez said on Wednesday.
"We keep looking forward, we know what we did right and want to improve.
"Just as we know what we did wrong, we just have to keep working."
Napoli will tomorrow host Sparta Prague as they kick-off their Europa League campaign with striker Gonzalo Higuain to face a late fitness test before the game.
"Gonzalo [Higuain] worked at a reduced pace this week," added the manager.
"We will assess him tomorrow. Same goes for Jorginho who has a small muscular problem. Whatever the results we have enough depth in the squad."