Wenger is wary of asking too much too soon from the France midfielder.
"Diaby became stronger during the game," Wenger said.
"I feel he was like the team. He started very slowly and became stronger in the second part of the game.
"I took the gamble (of starting Diaby after his injury lay-off) because I feel that it was needed. It's good that he came through well. He will become stronger very quickly."