Lil Wayne is taking his probation a lot more seriously than many would have expected!

The Young Money head honcho and the people behind his “I Am Still Music Tour” have totally banned alcohol backstage. (And when we say “totally” … we really mean “TOTALLY!”)

According to TMZ:

A rep for the I Am Still Music Tour tells TMZ, the concerts have “a dry backstage as we are committed to keeping a safe and professional atmosphere to ensure a smoothly running tour.”

But that doesn’t mean the audience can’t drink — according to the rep, the no-alcohol policy only extends backstage … “there is no ban on alcohol served at the venues.”

Weezy is forbidden from drinking alcohol as part of his three-year probation, which kicked off last year — following a drug-filled tour bus incident back in 2008.

And the rapper is serious about his sobriety …  sources tell us, Wayne’s personal tour bus is also 100% dry.

Good for Weezy! More and more we don’t have to worry about this fella. We’re glad at least SOME rappers take their parole conditions seriously…