diff --git a/src/include/86box/machine.h b/src/include/86box/machine.h
index 7ab675a6c..6eecb9f49 100644
--- a/src/include/86box/machine.h
+++ b/src/include/86box/machine.h
@@ -1319,7 +1319,7 @@ extern const device_t  jukopc_device;
 extern int             machine_xt_jukopc_init(const machine_t *);
 extern int             machine_xt_kaypropc_init(const machine_t *);
 extern int             machine_xt_micoms_xl7turbo_init(const machine_t *);
-extern int             machine_xt_pc500_init(const machine_t *);
+extern int             machine_xt_pc500plus_init(const machine_t *);
 extern int             machine_xt_pc700_init(const machine_t *);
 extern int             machine_xt_pc4i_init(const machine_t *);
 extern int             machine_xt_openxt_init(const machine_t *);
diff --git a/src/machine/m_xt.c b/src/machine/m_xt.c
index 954483d62..b909857d1 100644
--- a/src/machine/m_xt.c
+++ b/src/machine/m_xt.c
@@ -975,12 +975,12 @@ machine_xt_micoms_xl7turbo_init(const machine_t *model)
 }
 
 int
-machine_xt_pc500_init(const machine_t *model)
+machine_xt_pc500plus_init(const machine_t *model)
 {
     int ret;
 
     ret = bios_load_linear("roms/machines/pc500/rom404.bin",
-                           0x000f8000, 32768, 0);
+                           0x000fc000, 16384, 0);
 
     if (bios_only || !ret)
         return ret;
diff --git a/src/machine/machine_table.c b/src/machine/machine_table.c
index 7891bb3db..ec5f2e9f0 100644
--- a/src/machine/machine_table.c
+++ b/src/machine/machine_table.c
@@ -1095,11 +1095,11 @@ const machine_t machines[] = {
         .net_device = NULL
     },
     {
-        .name = "[8088] Multitech PC-500",
-        .internal_name = "pc500",
+        .name = "[8088] Multitech PC-500 plus",
+        .internal_name = "pc500plus",
         .type = MACHINE_TYPE_8088,
         .chipset = MACHINE_CHIPSET_DISCRETE,
-        .init = machine_xt_pc500_init,
+        .init = machine_xt_pc500plus_init,
         .p1_handler = NULL,
         .gpio_handler = NULL,
         .available_flag = MACHINE_AVAILABLE,