diff --git a/src/include/86box/machine.h b/src/include/86box/machine.h
index 78f4902eb..6d48dbff6 100644
--- a/src/include/86box/machine.h
+++ b/src/include/86box/machine.h
@@ -438,6 +438,8 @@ extern int machine_at_ibmatquadtel_init(const machine_t *); // IBM AT with Quadt
 
 extern int machine_at_ibmxt286_init(const machine_t *);
 
+extern int machine_at_pb286_init(const machine_t *);
+
 extern int machine_at_siemens_init(const machine_t *); // Siemens PCD-2L. N82330 discrete machine. It segfaults in some places
 
 extern int machine_at_wellamerastar_init(const machine_t *); // Wells American A*Star with custom award BIOS