At 5th level, a brawler's damage with close weapons increases. When wielding a close weapon, she uses the unarmed strike damage of a brawler 4 levels lower instead of the base damage for that weapon (for example, a 5th-level Medium brawler wielding a punching dagger deals 1d6 points of damage instead of the weapon's normal 1d4). If the weapon normally deals more damage than this amount, its damage is unchanged. This ability does not affect any other aspect of the weapon. The brawler can decide to use the weapon's base damage instead of her adjusted unarmed strike damage—this decision must be declared before the attack roll is made.