diff --git a/lib/include/openamp/rpmsg_retarget.h b/lib/include/openamp/rpmsg_retarget.h
index 1f63a63e9..b5fe8c69a 100644
--- a/lib/include/openamp/rpmsg_retarget.h
+++ b/lib/include/openamp/rpmsg_retarget.h
@@ -1,3 +1,10 @@
+/*
+ * Copyright (c) 2014, Mentor Graphics Corporation
+ * All rights reserved.
+ *
+ * SPDX-License-Identifier: BSD-3-Clause
+ */
+
 #ifndef RPMSG_RETARGET_H
 #define RPMSG_RETARGET_H
 
diff --git a/lib/proxy/rpmsg_retarget.c b/lib/proxy/rpmsg_retarget.c
index aa91b6714..97a289199 100644
--- a/lib/proxy/rpmsg_retarget.c
+++ b/lib/proxy/rpmsg_retarget.c
@@ -1,3 +1,10 @@
+/*
+ * Copyright (c) 2014, Mentor Graphics Corporation
+ * All rights reserved.
+ *
+ * SPDX-License-Identifier: BSD-3-Clause
+ */
+
 #include <errno.h>
 #include <metal/mutex.h>
 #include <metal/spinlock.h>