Ember CLI cant find partial

I am working on an addon. I try to use partial. In my addon/templates/components/form.hbs i got {{partial "pane"}}. My _pane.hbs is in addon/templates folder but ember cant find it:

Uncaught Error: Assertion Failed: Unable to find partial with name "pane".

I also tried to put _pane.hbs in addon/templates/components but no luck. Where should i put it to get picked up by ember?