1 files changed, 3 insertions, 0 deletions
diff --git a/tests/otp.rs b/tests/otp.rs
index 96da371..fb20768 100644
--- a/tests/otp.rs
+++ b/tests/otp.rs
@@ -1,3 +1,6 @@
+// Copyright (C) 2018-2019 Robin Krahl <robin.krahl@ireas.org>
+// SPDX-License-Identifier: MIT
+
 mod util;
 
 use std::fmt::Debug;