Interrupting an animation cycle in Unity2D

I'm transitioning from a walk animation to a death animation. The issue is that the character won't transition into the death animation until his "current" cycle of the walk animation is completed. How do you get around this? I've set the "Exit Time" condition to 0 (so that no time is spent executing the walk cycle before transitioning to the death cycle) and I've unchecked the "atomic" box so that the walk animation can be interrupted upon the death condition.

What am I missing to transition instantly from one state to another without finishing the current animation?

Thanks.