Cameroon boss Volker Finke revealed that he will not make any significant changes in his tactical approach ahead of his side's crucial clash with Croatia.
The Indomitable Lions fell to Mexico 1-nil in their opening game, and will look to bounce back on Wednesday.
"It's obvious that we need to change something," the German manager told fifa.com.
"But in football, the worst thing you can do is call everything into question. That doesn't work. In my opinion, you can't succeed like that."
"Doubts will drive you crazy. They lead to other doubts and you can't perform well when you start having doubts. "
"That doesn't mean you shouldn't go in for self-criticism, but doubt brings in question the very foundation of football, which is cooperation."