diff --git a/arch/arm/include/asm/arch-mx5/sys_proto.h b/arch/arm/include/asm/arch-mx5/sys_proto.h
index 14f5d94..de19c45 100644
--- a/arch/arm/include/asm/arch-mx5/sys_proto.h
+++ b/arch/arm/include/asm/arch-mx5/sys_proto.h
@@ -4,5 +4,9 @@
  *
  * SPDX-License-Identifier:	GPL-2.0+
  */
+#ifndef __SYS_PROTO_IMX5_
+#define __SYS_PROTO_IMX5_
 
 #include <asm/mach-imx/sys_proto.h>
+
+#endif /* __SYS_PROTO_IMX5_ */