diff --git a/arch/arm/src/sama5/sam_memories.c b/arch/arm/src/sama5/sam_memories.c
index 527d7315459..092e71c6e4b 100644
--- a/arch/arm/src/sama5/sam_memories.c
+++ b/arch/arm/src/sama5/sam_memories.c
@@ -26,6 +26,7 @@
 
 #include <nuttx/config.h>
 #include <nuttx/addrenv.h>
+#include <nuttx/arch.h>
 
 #include <inttypes.h>
 #include <stdint.h>