diff --git a/src/include/86box/machine.h b/src/include/86box/machine.h
index 9f7dc61eb..5ff6129b9 100644
--- a/src/include/86box/machine.h
+++ b/src/include/86box/machine.h
@@ -803,6 +803,7 @@ extern int	machine_xt_t1200_init(const machine_t *);
 extern int	machine_xt_z150_init(const machine_t *);
 extern int	machine_xt_z151_init(const machine_t *);
 extern int	machine_xt_z159_init(const machine_t *);
+extern int	machine_xt_z184_init(const machine_t *);
 
 /* m_xt_xi8088.c */
 extern int	machine_xt_xi8088_init(const machine_t *);