diff --git a/src/include/86box/machine.h b/src/include/86box/machine.h
index 1f123e9f5..dd208b0ce 100644
--- a/src/include/86box/machine.h
+++ b/src/include/86box/machine.h
@@ -664,6 +664,7 @@ extern int machine_at_p5sp4_init(const machine_t *);
 /* m_at_socket5.c */
 extern int machine_at_plato_init(const machine_t *);
 extern int machine_at_dellplato_init(const machine_t *);
+extern int machine_at_d842_init(const machine_t *);
 extern int machine_at_ambradp90_init(const machine_t *);
 extern int machine_at_p54np4_init(const machine_t *);
 extern int machine_at_586ip_init(const machine_t *);