diff --git a/stand/kboot/arch/amd64/termios_arch.h b/stand/kboot/arch/amd64/termios_arch.h
index 0d5ae3718498..5db0b9831cdb 100644
--- a/stand/kboot/arch/amd64/termios_arch.h
+++ b/stand/kboot/arch/amd64/termios_arch.h
@@ -1 +1,7 @@
+/*-
+ * Copyright (c) 2022, Netflix, Inc.
+ *
+ * SPDX-License-Identifier: BSD-2-Clause
+ */
+
 #include "termios_gen.h"
diff --git a/stand/kboot/arch/powerpc64/termios_arch.h b/stand/kboot/arch/powerpc64/termios_arch.h
index 62b801ff16da..7b9e8f15a8ca 100644
--- a/stand/kboot/arch/powerpc64/termios_arch.h
+++ b/stand/kboot/arch/powerpc64/termios_arch.h
@@ -1,3 +1,11 @@
+/*
+ * Copyright (c) 2005-2020 Rich Felker, et al.
+ *
+ * SPDX-License-Identifier: MIT
+ *
+ * Note: From the musl project, stripped down and repackaged with HOST_/host_ prepended
+ */
+
 #undef HOST_NCCS
 #define HOST_NCCS 19
 struct host_termios {
diff --git a/stand/kboot/termios_gen.h b/stand/kboot/termios_gen.h
index 041205e6dd0a..6e26338d4496 100644
--- a/stand/kboot/termios_gen.h
+++ b/stand/kboot/termios_gen.h
@@ -1,3 +1,11 @@
+/*
+ * Copyright (c) 2005-2020 Rich Felker, et al.
+ *
+ * SPDX-License-Identifier: MIT
+ *
+ * Note: From the musl project, stripped down and repackaged with HOST_/host_ prepended
+ */
+
 struct host_termios {
 	host_tcflag_t c_iflag;
 	host_tcflag_t c_oflag;