Pathfinder Rules Gods. Ring of Imminent Demise Bug or misreading it?

[Evocati]

Ring of Imminent Demise:
"Whenever the wearer of this ring makes an attack of opportunity, the enemy must pass a Fortitude saving throw (DC 26) or be knocked down. The ring also grants a +2 competence bonus on attack and damage rolls with two-handed weapons."

I am not seeing a buff to attack and damage rolls with a Longbow, is this a bug/oversite? Or should the description be "with two-handed melee weapons"? Or is the bonus only used during attack of opportunity?

[dszombiex]

Probably meant two handed melee weapons.