"I knew about it [the 300th league appearance]. I hoped to come on at Arsenal last weekend but I didn't, so I'm still waiting," the Finn told the club's official website.
"It makes me feel good that I'm still here after nine years. It shows I've done something right.
"Of course it's unfortunate that Daniel Agger has been out for the season, but because of that I've played a lot more than I thought I would, and of course I've enjoyed every minute of it."