Chaos Totem (Su): While raging, the barbarian’s form becomes infused with chaos. She gains a +4 bonus on Escape Artist checks and has a 25% chance to ignore extra damage from critical hits and sneak attacks.
Rage (Ex): ...While in rage, a barbarian cannot use any Charisma-, Dexterity-, or Intelligence-based skills (except Acrobatics, Fly, Intimidate, and Ride) or any ability that requires patience or concentration.
Confused about why the Chaos Totem rage power gives a bonus to Escape Artist, a skill that can't be used during rage. Am I missing something?