diff --git a/sim/mcuboot-sys/src/area.rs b/sim/mcuboot-sys/src/area.rs
index 779157a..dc05e39 100644
--- a/sim/mcuboot-sys/src/area.rs
+++ b/sim/mcuboot-sys/src/area.rs
@@ -1,3 +1,9 @@
+// Copyright (c) 2017-2019 Linaro LTD
+// Copyright (c) 2018-2019 JUUL Labs
+// Copyright (c) 2019 Arm Limited
+//
+// SPDX-License-Identifier: Apache-2.0
+
 //! Describe flash areas.
 
 use simflash::{Flash, SimFlash, Sector};