diff --git a/hw/pc_piix.c b/hw/pc_piix.c
index 52939f535d..ec7da6d4c6 100644
--- a/hw/pc_piix.c
+++ b/hw/pc_piix.c
@@ -157,6 +157,7 @@ static void pc_init1(MemoryRegion *system_memory,
         pci_bus = NULL;
         i440fx_state = NULL;
         isa_bus_new(NULL);
+        no_hpet = 1;
     }
     isa_bus_irqs(isa_irq);