diff --git a/plat/nvidia/tegra/common/drivers/smmu/smmu.c b/plat/nvidia/tegra/common/drivers/smmu/smmu.c
index fa3f000..4b9edb6 100644
--- a/plat/nvidia/tegra/common/drivers/smmu/smmu.c
+++ b/plat/nvidia/tegra/common/drivers/smmu/smmu.c
@@ -1,5 +1,5 @@
 /*
- * Copyright (c) 2016-2017, ARM Limited and Contributors. All rights reserved.
+ * Copyright (c) 2016-2018, ARM Limited and Contributors. All rights reserved.
  *
  * SPDX-License-Identifier: BSD-3-Clause
  */
@@ -12,6 +12,8 @@
 #include <string.h>
 #include <tegra_private.h>
 
+extern void memcpy16(void *dest, const void *src, unsigned int length);
+
 /* SMMU IDs currently supported by the driver */
 enum {
 	TEGRA_SMMU0,