diff --git a/src/drivers/stm32/drv_hrt.c b/src/drivers/stm32/drv_hrt.c
index b7c9b89a45..f324b341e1 100644
--- a/src/drivers/stm32/drv_hrt.c
+++ b/src/drivers/stm32/drv_hrt.c
@@ -94,7 +94,7 @@
 #elif HRT_TIMER == 3
 # define HRT_TIMER_BASE		STM32_TIM3_BASE
 # define HRT_TIMER_POWER_REG	STM32_RCC_APB1ENR
-# define HRT_TIMER_POWER_BIT	RCC_APB2ENR_TIM3EN
+# define HRT_TIMER_POWER_BIT	RCC_APB1ENR_TIM3EN
 # define HRT_TIMER_VECTOR	STM32_IRQ_TIM3
 # define HRT_TIMER_CLOCK	STM32_APB1_TIM3_CLKIN
 # if CONFIG_STM32_TIM3