diff --git a/src/machine/m_at_ich2.c b/src/machine/m_at_ich2.c
index 1dda0b623..9cbd9ce4a 100644
--- a/src/machine/m_at_ich2.c
+++ b/src/machine/m_at_ich2.c
@@ -45,7 +45,7 @@ machine_at_cusl2c_init(const machine_t *model)
     if (bios_only || !ret)
         return ret;
 
-    machine_at_common_init_ex(model);
+    machine_at_common_init_ex(model, 2);
 
     pci_init(PCI_CONFIG_TYPE_1);
     pci_register_bus_slot(0, 0x00, PCI_CARD_NORTHBRIDGE, 0, 0, 0, 0);