mislabel 
verb (mislabels, mislabelling, mislabelled) [with object]
Label incorrectly: a supplier had mislabelled the packet...
- The purpose of identity testing is to exclude mislabelling.
- Indeed, the photographs and illustrations are often misleading, and frequently mislabelled as well.
- Anti-censorship feminism is often very misunderstood and mislabelled and I would recommend this book to anyone, whatever their stance.