Right Wiper on 2006 Prius - makes noise

I have a 2006 Prius that has a wiper problem on the right side. I have to say I'm a little annoyed since the car was just at the service department to fix the A/C (the compressor died - getting the part took three weeks).

It looks like the whole right wiper arm had come loose to where it now hits the hood. It's starting to leave a scrape mark on the matte-black finish.

I'll see if service can fit me in today, otherwise it looks like there is one bolt that holds/adjusts? the right wiper arm. May I can just get a socket wrench and re-adjust this myself?

Anyone else have a similar problem?

Other than that, we do like the car. We get 45.5 MPG on a very hilly commute from Eastern PA to Newark, NJ.

Any all all replies welcome!

Thanks!

The Pocono PC Doctor