diff --git a/bin/csh/iconv_stub.c b/bin/csh/iconv_stub.c
index 67659d9f20a..22a0fe3a030 100644
--- a/bin/csh/iconv_stub.c
+++ b/bin/csh/iconv_stub.c
@@ -1,4 +1,6 @@
 /*-
+ * SPDX-License-Identifier: BSD-2-Clause
+ *
  * Copyright (c) 2006 Hajimu UMEMOTO <ume@FreeBSD.org>
  * All rights reserved.
  *
diff --git a/bin/csh/iconv_stub.h b/bin/csh/iconv_stub.h
index d85bcf3b113..ab9cf5a7197 100644
--- a/bin/csh/iconv_stub.h
+++ b/bin/csh/iconv_stub.h
@@ -1,4 +1,6 @@
 /*-
+ * SPDX-License-Identifier: BSD-2-Clause
+ *
  * Copyright (c) 2006 Hajimu UMEMOTO <ume@FreeBSD.org>
  * All rights reserved.
  *