Loose mudguard above rear wheels

I noticed that a mudguard panel above the driver-side rear wheels was loose, falling down onto the tire. Not ideal. It looked like it was only held up by one bolt, buried in foam insulation, which had come loose. So I reattached it. I also got some more bolts to better attach it, though I haven’t bothered to do that yet, since that one bolt seems sufficient. But I’ll keep an eye on it.

Mudguard above rear wheel

Bolt

Bolt