diff --git a/src/include/86box/machine.h b/src/include/86box/machine.h
index 6b84d2b57..b39ecdad6 100644
--- a/src/include/86box/machine.h
+++ b/src/include/86box/machine.h
@@ -422,7 +422,6 @@ extern int             machine_get_type(int m);
 extern int             machine_get_chipset(int m);
 extern void            machine_close(void);
 extern int             machine_has_mouse(void);
-extern int             machine_is_sony(void);
 
 extern uint8_t         machine_compaq_p1_handler(void);
 extern uint8_t         machine_generic_p1_handler(void);
diff --git a/src/machine/machine_table.c b/src/machine/machine_table.c
index 792409e9b..e404a3f4a 100644
--- a/src/machine/machine_table.c
+++ b/src/machine/machine_table.c
@@ -20715,12 +20715,6 @@ machine_has_mouse(void)
     return (machines[machine].flags & MACHINE_MOUSE);
 }
 
-int
-machine_is_sony(void)
-{
-    return (!strcmp(machines[machine].internal_name, "pcv90"));
-}
-
 const char *
 machine_get_nvr_name_ex(int m)
 {