1 files changed, 5 insertions, 0 deletions
diff --git a/signal.go b/signal.go
index 1505593..4d51bfa 100644
--- a/signal.go
+++ b/signal.go
@@ -1,3 +1,8 @@
+/* SPDX-License-Identifier: GPL-2.0
+ *
+ * Copyright (C) 2017-2018 Jason A. Donenfeld <Jason@zx2c4.com>. All Rights Reserved.
+ */
+
 package main
 
 type Signal struct {