/enchant command doesn't allow to put "Curse of Binding" on skulls or pumpkins

The new enchantment "Curse of Binding" can be put on all types of skull (thus player, Creeper, Ender Dragon, skeleton, Wither Skeleton, zombie) and pumpkins using an ANVIL and an enchanted book.

And it properly works: I cannot remove the head I dragged into the armor slot (in SURVIVAL!) any more.

But using the command, it outputs "selected enchantment can't be put on target item".