1 files changed, 4 insertions, 0 deletions
diff --git a/mtl.h b/mtl.h
index 7c427c1..00a1b70 100644
--- a/mtl.h
+++ b/mtl.h
@@ -1,3 +1,7 @@
+/*
+ * Copyright (C) 2018 Tomasz Kramkowski <tk@the-tk.com>
+ * SPDX-License-Identifier: MIT
+ */
 #ifndef MTL_H
 #define MTL_H