strength and to hit

[StuperStar]

hey, i have a fighter 2/cleric x and i just noticed that his attack roll modifiers include "abilities: -1". he has 18 strength, so shouldn't it be +4? it's fairly early in the game and his equipment only affects cold resistance and reflex saving throws. the weapon is a two-handed axe +2 (and he's proficient in axes, being a fighter). when i switch him to a throwing axe, it changes to "abilities: +3". any ideas?

[StuperStar]

nevermind, i'm dumb. forgot i had power attack activated