Arsenal boss Wenger confident Lehmann gaffe one-off
Wenger said: "Jens made a big mistake. In your career you need luck. Is it early or late?
"His luck was that the team won, and certainly he was the happiest player in the dressing room after the game.
"He will play against Prague - I would not think to take the player out, because apart from making the mistake, he had a very good game and that also shows some strength."