Inaccurate?

Power Word Nauseate

(Races of the Dragon)

Enchantment (Compulsion) [Mind-Affecting]
Level: Sorcerer 6, Wizard 6,
Components: V,
Casting Time: 1 standard action
Range: Close (25 ft. + 5 ft./2 levels)
Target: One living creature with 150 hp or less
Duration: See text
Saving Throw: None
Spell Resistance: Yes

You speak a word of power so disgusting that your target retches. You utter a single word of power that instantly causes one creature of your choice to become nauseated, whether the creature can hear the word or not. The duration of the spell depends on the target's current hit point total, as shown below. Any creature that currently has 151 or more hit points is unaffected by power word nauseate.

Hit Points Duration
50 or less 2d4+2 rounds
51-100 1d4+1 rounds
101-150 1 round