diff --git a/arch/arm/src/armv7-a/Toolchain.defs b/arch/arm/src/armv7-a/Toolchain.defs
index 66312938bb..872eba609e 100644
--- a/arch/arm/src/armv7-a/Toolchain.defs
+++ b/arch/arm/src/armv7-a/Toolchain.defs
@@ -1,7 +1,7 @@
 ############################################################################
 # arch/arm/src/armv7-a/Toolchain.defs
 #
-#   Copyright (C) 2013 Gregory Nutt. All rights reserved.
+#   Copyright (C) 2013, 2019 Gregory Nutt. All rights reserved.
 #   Author: Gregory Nutt <gnutt@nuttx.org>
 #
 # Redistribution and use in source and binary forms, with or without
@@ -91,12 +91,15 @@ endif
 #
 
 ARCHCPUFLAGS += -march=armv7-a
+
 ifeq ($(CONFIG_ARM_THUMB),y)
 ARCHCPUFLAGS += -mthumb
 endif
+
 ifeq ($(CONFIG_ARCH_FPU),y)
 ARCHCPUFLAGS += -mfloat-abi=hard
 endif
+
 ifeq ($(CONFIG_ARCH_CORTEXA5),y)
 ARCHCPUFLAGS += -mcpu=cortex-a5
 elif ($(CONFIG_ARCH_CORTEXA7),y)
diff --git a/arch/arm/src/armv7-a/arm_scu.c b/arch/arm/src/armv7-a/arm_scu.c
index 99d4bc3c8b..6ce2bdd4cb 100644
--- a/arch/arm/src/armv7-a/arm_scu.c
+++ b/arch/arm/src/armv7-a/arm_scu.c
@@ -1,7 +1,7 @@
 /****************************************************************************
  * arch/arm/src/armv7-a/arm_scu.c
  *
- *   Copyright (C) 2016 Gregory Nutt. All rights reserved.
+ *   Copyright (C) 2016, 2019 Gregory Nutt. All rights reserved.
  *   Author: Gregory Nutt <gnutt@nuttx.org>
  *
  * Redistribution and use in source and binary forms, with or without
@@ -43,6 +43,7 @@
 
 #include "up_arch.h"
 #include "cp15_cacheops.h"
+#include "barriers.h"
 #include "sctlr.h"
 #include "scu.h"