Loose Rear Bushing

I was riding my 2013 850 XP the other day and something didn’t feel right. I rode it for about an hour and loaded it up to take it home and I noticed one of the upper rear bushing bolts was loose. I just greased it a week before and didn’t notice anything loose. I tightened it up and I think everything is fine but should I take it to the dealer to have that bushing replaced? Anyone had any problems like this before?