diff --git a/board/hammer/board.c b/board/hammer/board.c
index 2f03082a6b..73ade52cbb 100644
--- a/board/hammer/board.c
+++ b/board/hammer/board.c
@@ -51,7 +51,7 @@ const unsigned int i2c_ports_used = ARRAY_SIZE(i2c_ports);
 
 /* PWM channels. Must be in the exactly same order as in enum pwm_channel. */
 const struct pwm_t pwm_channels[] = {
-	{STM32_TIM(TIM_KBLIGHT), STM32_TIM_CH(1), 0, 100 /* Hz */ },
+	{STM32_TIM(TIM_KBLIGHT), STM32_TIM_CH(1), 0, 10000 /* Hz */ },
 };
 BUILD_ASSERT(ARRAY_SIZE(pwm_channels) == PWM_CH_COUNT);