The Gunners won 1-0 thanks to a successful penalty from Gyokeres in the first-half.
"Good, of course. It was a tough win away from home, but we took the three points and it was nice to score a goal," said the Swede.
"We spoke a little bit on the pitch. It was an easy talk and then I took it. To be fair, a few months ago I took one, and it was nice to take one again and to score.
"We don't think about it too much, we just wait for the decision. Then you know it's a penalty and you just wait for the normal procedure. Nothing special, really."
Gyokeres added, "It was a tough game but it would have been good if we had scored a few more goals, because then you can control it a bit more,.
"When it's only 1-0, it can be a bit stressful at times in the end. Of course, we would have liked to convert those chances we had, but we won in the end so that's the most important thing."