Top Screen Rattle/Buzz...

After a few longer trips over the last few days, I've noticed a really annoying rattle coming from my top screen. I've noticed it before, but most of the streets I drive are pretty smooth, so I was having a hard time determining where it was coming from.

I did a search and didn't see anything come up, so it must not be a common problem. Can anyone think of something that would need to be tightened in there to stop the rattle? Anyone else have this issue?

Just curious if there is an easy fix or should I just take it in?

Thanks!