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 7c73bf5f61..31559c7bf8 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
@@ -62,7 +62,6 @@ int stm32h7_flash_lock(size_t addr);
 int stm32h7_flash_unlock(size_t addr);
 int stm32h7_flash_writeprotect(size_t block, bool enabled);
 #define  stm32_flash_lock() stm32h7_flash_lock(PX4_FLASH_BASE)
-#define PX4_ADC_ADC3_BASE STM32_ADC3_BASE
 #define PX4_ADC_INTERNAL_TEMP_SENSOR_CHANNEL (20) //Valid for ADC3 on H7x3
 
 __END_DECLS