Just got a 2007 Suzuki C800/C50, valve noise?

I'm a green rider, just got my license. Despite lots of advice to the contrary, went with a cruiser as my first bike. Haven't regretted a single moment, though the first slow turn off the seller's driveway on this was...intimidating.

Now that I've got used to the bike, the valve clacking has started to bother me a bit. I have some experience with engines, it could be perfectly normal, but it is quite distinctive.

Anyone have experience with these, is it likely normal or should I start looking into adjusting them? According to the seller they were adjusted about 1600km ago last year.

I know it's impossible to say without hearing it, but asking anyway. Other tips are more than welcome too!