Oil weep

[RichardN]

Hi everybody. My 1200GS has done 30,000 miles from new on a 54 plate. Had the usual problems but all fixed with no hassel. Just noticed that there seems to be some oil under what I think is the air filter housing on the right hand side of the bike. It's the black plastic box behind the battery. Could this be some oil that has been vented into the air filter box so nothing to worry about?
Any comments welcome.