3 files changed, 6 insertions, 0 deletions
diff --git a/lib/libcalendar/calendar.c b/lib/libcalendar/calendar.c
index fca63eebd9ec..4c89a5d9cf01 100644
--- a/lib/libcalendar/calendar.c
+++ b/lib/libcalendar/calendar.c
@@ -1,4 +1,6 @@
 /*-
+ * SPDX-License-Identifier: BSD-2-Clause-FreeBSD
+ *
  * Copyright (c) 1997 Wolfgang Helbig
  * All rights reserved.
  *
diff --git a/lib/libcalendar/calendar.h b/lib/libcalendar/calendar.h
index 2c42d6c2214e..1dadd9c64fe7 100644
--- a/lib/libcalendar/calendar.h
+++ b/lib/libcalendar/calendar.h
@@ -1,4 +1,6 @@
 /*-
+ * SPDX-License-Identifier: BSD-2-Clause-FreeBSD
+ *
  * Copyright (c) 1997 Wolfgang Helbig
  * All rights reserved.
  *
diff --git a/lib/libcalendar/easter.c b/lib/libcalendar/easter.c
index 8bb3e1c46a97..9ab0f8a7064d 100644
--- a/lib/libcalendar/easter.c
+++ b/lib/libcalendar/easter.c
@@ -1,4 +1,6 @@
 /*-
+ * SPDX-License-Identifier: BSD-2-Clause-FreeBSD
+ *
  * Copyright (c) 1997 Wolfgang Helbig
  * All rights reserved.
  *