diff --git a/arch/arm/src/armv7-r/arm_head.S b/arch/arm/src/armv7-r/arm_head.S
index d5744dd145..a881845437 100644
--- a/arch/arm/src/armv7-r/arm_head.S
+++ b/arch/arm/src/armv7-r/arm_head.S
@@ -27,6 +27,7 @@
 #include "arm.h"
 #include "cp15.h"
 #include "sctlr.h"
+#include "arm_internal.h"
 
 	.file	"arm_head.S"