Its not a big deal Deej...you'll find a lot of the older 748/9** models with the same thing. I notice yours still has the old type of breather (with the silver metal surround/edge). The newer types appear to be all plastic.
I think these are slightly better, and also come with some form of 'o' ring or gasket to try and avoid this small leak. You will also see a lot of bikes with silicone around this breather in a bid to stop it as it is so common.
Talk to Nelly, I'm sure he can sort you one out, and talk you through the removal/refitting.