West Brom manager Steve Clarke was infuriated when Arsenal were awarded a controversial penalty for a challenge from Steven Reid on Santi Cazorla but Arsene Wenger insists Cazorla lost his footing.
"I am sorry if it was not a penalty, but I have spoken to Santi and he said he was touched, lost his balance. Has he made a bit more of it? I don't know," Wenger told Sky Sports.
"When he [a player] is touched, he goes down, the referee can give or not give the penalty. Of course [I will speak to Santi if he has not been touched]. I will look at it, don't worry."
Despite its controversial nature, it was a much-needed first victory in four matches for the Gunners, who have moved back up the Premier League table as a result.
"Overall we played well. We were maybe a bit lucky on the first penalty, but we created chances and kept a clean sheet," Wenger said.
"We have shown a great spirit, which many people questioned after our last game, so we did our job very well.
"You could feel we were ready for a fight and that we absolutely had to win this game, which is what we did."
England midfielder Jack Wilshere produced a composed display in the 2-0 victory and Wenger acknowledge his return to form.
Wenger said: "Jack is getting closer to the player we know he is and today I think he made a big step.
"You could see it already this week in training, that he has gained a little burst again, a little zip in the first three or four yards.
"In football, you have sometimes to be patient. He can only gain it by playing but of course in the first games you cannot be at that level."