diff --git a/sbin/decryptcore/decryptcore.c b/sbin/decryptcore/decryptcore.c
index 1e7cf4070e5..c35f7660bb3 100644
--- a/sbin/decryptcore/decryptcore.c
+++ b/sbin/decryptcore/decryptcore.c
@@ -1,4 +1,6 @@
 /*-
+ * SPDX-License-Identifier: BSD-2-Clause
+ *
  * Copyright (c) 2016 Konrad Witaszczyk <def@FreeBSD.org>
  * All rights reserved.
  *