When blasting smite is used on a minion, it does not restore health or mana

http://prntscr.com/61ki8b "Casting smite on a monster restores 15% of missing Health and Mana" so no, it doesn't heal off minions P:

Doesn't it specify that it only restores missing % of health and mana when used against monsters?

Why downvote this guy? Based on the tooltip this is exactly what it should do.