diff --git a/arch/arm/src/stm32l4/stm32l4_start.c b/arch/arm/src/stm32l4/stm32l4_start.c
index 9d068fb46a..4c1219b760 100644
--- a/arch/arm/src/stm32l4/stm32l4_start.c
+++ b/arch/arm/src/stm32l4/stm32l4_start.c
@@ -53,6 +53,7 @@
 #include "stm32l4.h"
 #include "stm32l4_gpio.h"
 #include "stm32l4_userspace.h"
+#include "stm32l4_start.h"
 
 #ifdef CONFIG_ARCH_FPU
 #  include "nvic.h"