The Hungarian, 24, made two howlers in the Blues' 5-1 win at the Reebok last month.
And boss Coyle said: "It's important nobody makes a big thing about it. The kid has been unbelievable for us but he had a poor game — a number of players had, so it wasn't just him.
"Goalkeepers need a mental strength and belief in their ability.
"Adam has all of that. He will be a top keeper and this is an opportunity to show that."