diff --git a/ObsoleteFiles.inc b/ObsoleteFiles.inc
--- a/ObsoleteFiles.inc
+++ b/ObsoleteFiles.inc
@@ -51,6 +51,9 @@
 #   xargs -n1 | sort | uniq -d;
 # done
 
+# 2025xxxx: bus_generic_attach.9 removed after the function was deprecated
+OLD_FILES+=usr/share/man/man9/bus_generic_attach.9.gz
+
 # 20241206: Remove Altera DE4 drivers
 OLD_FILES+=usr/share/man/man4/altera_atse.4.gz
 OLD_FILES+=usr/share/man/man4/altera_avgen.4.gz
diff --git a/share/man/man9/Makefile b/share/man/man9/Makefile
--- a/share/man/man9/Makefile
+++ b/share/man/man9/Makefile
@@ -39,7 +39,6 @@
 	bus_delayed_attach_children.9 \
 	BUS_DESCRIBE_INTR.9 \
 	bus_dma.9 \
-	bus_generic_attach.9 \
 	bus_generic_detach.9 \
 	bus_generic_new_pass.9 \
 	bus_generic_print_child.9 \
diff --git a/share/man/man9/bus_generic_attach.9 b/share/man/man9/bus_generic_attach.9
deleted file mode 100644
--- a/share/man/man9/bus_generic_attach.9
+++ /dev/null
@@ -1,56 +0,0 @@
-.\" -*- nroff -*-
-.\"
-.\" Copyright (c) 1998 Doug Rabson
-.\"
-.\" All rights reserved.
-.\"
-.\" This program is free software.
-.\"
-.\" Redistribution and use in source and binary forms, with or without
-.\" modification, are permitted provided that the following conditions
-.\" are met:
-.\" 1. Redistributions of source code must retain the above copyright
-.\"    notice, this list of conditions and the following disclaimer.
-.\" 2. Redistributions in binary form must reproduce the above copyright
-.\"    notice, this list of conditions and the following disclaimer in the
-.\"    documentation and/or other materials provided with the distribution.
-.\"
-.\" THIS SOFTWARE IS PROVIDED BY THE DEVELOPERS ``AS IS'' AND ANY EXPRESS OR
-.\" IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES
-.\" OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED.
-.\" IN NO EVENT SHALL THE DEVELOPERS BE LIABLE FOR ANY DIRECT, INDIRECT,
-.\" INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT
-.\" NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
-.\" DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
-.\" THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
-.\" (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF
-.\" THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
-.\"
-.Dd January 15, 2017
-.Dt BUS_GENERIC_ATTACH 9
-.Os
-.Sh NAME
-.Nm bus_generic_attach
-.Nd generic implementation of
-.Dv DEVICE_ATTACH
-for buses
-.Sh SYNOPSIS
-.In sys/param.h
-.In sys/bus.h
-.Ft int
-.Fn bus_generic_attach "device_t dev"
-.Sh DESCRIPTION
-This function provides an implementation of the
-.Xr DEVICE_ATTACH 9
-method which can be used by most bus code.
-It simply calls
-.Xr device_probe_and_attach 9
-for each child device attached to the bus.
-.Sh RETURN VALUES
-Zero is returned on success, otherwise an appropriate error is returned.
-.Sh SEE ALSO
-.Xr device 9 ,
-.Xr driver 9
-.Sh AUTHORS
-This manual page was written by
-.An Doug Rabson .