Hand rig generating errors on import

I've got a humanoid rig for my character model and I've included finger bones, which is giving me issues. When I try to set the rig to humanoid, I can't configure my rig. If I go to the Animations tab, I get the errors MuscleClip 'myModel' conversion failed: Transform 'ringFinger1_L' is not an ancestor of 'middleFinger1_l'. Of course not... they're different fingers.

I have 3 bones for each of my fingers, the first of which is parented to the hand bone. The other bones are parented to the bone before it.Now, I have NO idea if I'm doing this correctly, but it makes sense to me and I can't find much info about doing hands like this on the Googles. Anyone know how to fix this?

I'm using Unity 5.1.1f1, if that matters.