diff --git a/meson.build b/meson.build
index b7d578f44..2784c346b 100644
--- a/meson.build
+++ b/meson.build
@@ -120,7 +120,7 @@ else
   custom_baud_c = 'custom_baud.c'
 endif
 
-systems_hwaccess   = [ 'linux', 'openbsd', 'freebsd', 'dragonfly', 'netbsd' ]
+systems_hwaccess   = [ 'linux', 'openbsd', 'freebsd', 'dragonfly', 'netbsd', 'dos' ]
 systems_serial     = [ 'linux', 'openbsd', 'freebsd', 'dragonfly', 'netbsd', 'darwin' ]
 
 cpus_port_io = [ 'x86', 'x86_64' ]