diff --git a/bin/setfacl/file.c b/bin/setfacl/file.c
--- a/bin/setfacl/file.c
+++ b/bin/setfacl/file.c
@@ -1,4 +1,6 @@
 /*-
+ * SPDX-License-Identifier: BSD-2-Clause
+ *
  * Copyright (c) 2001 Chris D. Faulhaber
  * All rights reserved.
  *
diff --git a/bin/setfacl/mask.c b/bin/setfacl/mask.c
--- a/bin/setfacl/mask.c
+++ b/bin/setfacl/mask.c
@@ -1,4 +1,6 @@
 /*-
+ * SPDX-License-Identifier: BSD-2-Clause
+ *
  * Copyright (c) 2001-2002 Chris D. Faulhaber
  * All rights reserved.
  *
diff --git a/bin/setfacl/merge.c b/bin/setfacl/merge.c
--- a/bin/setfacl/merge.c
+++ b/bin/setfacl/merge.c
@@ -1,4 +1,6 @@
 /*-
+ * SPDX-License-Identifier: BSD-2-Clause
+ *
  * Copyright (c) 2001 Chris D. Faulhaber
  * All rights reserved.
  *
diff --git a/bin/setfacl/remove.c b/bin/setfacl/remove.c
--- a/bin/setfacl/remove.c
+++ b/bin/setfacl/remove.c
@@ -1,4 +1,6 @@
 /*-
+ * SPDX-License-Identifier: BSD-2-Clause
+ *
  * Copyright (c) 2001 Chris D. Faulhaber
  * All rights reserved.
  *
diff --git a/bin/setfacl/setfacl.h b/bin/setfacl/setfacl.h
--- a/bin/setfacl/setfacl.h
+++ b/bin/setfacl/setfacl.h
@@ -1,4 +1,6 @@
 /*-
+ * SPDX-License-Identifier: BSD-2-Clause
+ *
  * Copyright (c) 2001 Chris D. Faulhaber
  * All rights reserved.
  *
diff --git a/bin/setfacl/setfacl.c b/bin/setfacl/setfacl.c
--- a/bin/setfacl/setfacl.c
+++ b/bin/setfacl/setfacl.c
@@ -1,4 +1,6 @@
 /*-
+ * SPDX-License-Identifier: BSD-2-Clause
+ *
  * Copyright (c) 2001 Chris D. Faulhaber
  * All rights reserved.
  *
diff --git a/bin/setfacl/util.c b/bin/setfacl/util.c
--- a/bin/setfacl/util.c
+++ b/bin/setfacl/util.c
@@ -1,4 +1,6 @@
 /*-
+ * SPDX-License-Identifier: BSD-2-Clause
+ *
  * Copyright (c) 2001 Chris D. Faulhaber
  * All rights reserved.
  *