Mac zip compress without __MACOSX folder?

Can be fixed after the fact by zip -d filename.zip __MACOSX/\*

And, to also delete .DS_Store files: zip -d filename.zip \*/.DS_Store

When I had this problem I've done it from command line:

zip file.zip uncompressed

EDIT, after many downvotes: I was using this option for some time ago and I don't know where I learnt it, so I can't give you a better explanation. Chris Johnson's answer is correct, but I won't delete mine. As one comment says, it's more accurate to what OP is asking, as it compress without those files, instead of removing them from a compressed file. I find it easier to remember, too.