1 files changed, 1 insertions, 1 deletions
diff --git a/hw/pc_piix.c b/hw/pc_piix.c
index 0144534e82..1056cc79cc 100644
--- a/hw/pc_piix.c
+++ b/hw/pc_piix.c
@@ -156,7 +156,7 @@ static void pc_init1(MemoryRegion *system_memory,
     } else {
         pci_bus = NULL;
         i440fx_state = NULL;
-        isa_bus_new(NULL);
+        isa_bus_new(NULL, system_io);
         no_hpet = 1;
     }
     isa_bus_irqs(isa_irq);