diff --git a/hw/pc_piix.c b/hw/pc_piix.c
index 0c0096f..cac7b36 100644
--- a/hw/pc_piix.c
+++ b/hw/pc_piix.c
@@ -410,6 +410,10 @@ static QEMUMachine pc_machine_v1_1 = {
             .driver   = TYPE_USB_DEVICE,\
             .property = "full-path",\
             .value    = "no",\
+        },{\
+            .driver   = "mc146818rtc",\
+            .property = "lost_tick_policy",\
+            .value    = "discard",\
         }
 
 static QEMUMachine pc_machine_v1_0 = {