diff --git a/sys/i386/boot/netboot/opt_nfs.h b/sys/i386/boot/netboot/opt_nfs.h
new file mode 100644
index 00000000000..7cec4625f25
--- /dev/null
+++ b/sys/i386/boot/netboot/opt_nfs.h
@@ -0,0 +1 @@
+#define NFS 1