diff --git a/platforms/nuttx/src/px4/stm/stm32h7/include/px4_arch/micro_hal.h b/platforms/nuttx/src/px4/stm/stm32h7/include/px4_arch/micro_hal.h
index 31559c7bf8..93e80aaa49 100644
--- a/platforms/nuttx/src/px4/stm/stm32h7/include/px4_arch/micro_hal.h
+++ b/platforms/nuttx/src/px4/stm/stm32h7/include/px4_arch/micro_hal.h
@@ -44,6 +44,7 @@ __BEGIN_DECLS
 #define STM32_RCC_APB1RSTR    STM32_RCC_APB1LRSTR
 #define RCC_APB1ENR_TIM2EN    RCC_APB1LENR_TIM2EN
 #define RCC_APB1ENR_TIM3EN    RCC_APB1LENR_TIM3EN
+#define RCC_APB1ENR_TIM4EN    RCC_APB1LENR_TIM4EN
 #define RCC_APB1ENR_TIM5EN    RCC_APB1LENR_TIM5EN
 #define RCC_APB1ENR_TIM14EN   RCC_APB1LENR_TIM14EN
 #define RCC_APB1RSTR_TIM2RST  RCC_APB1LRSTR_TIM2RST