diff --git a/hw/ppc440_bamboo.c b/hw/ppc440_bamboo.c
index 8a50836b2d..efe5a77bab 100644
--- a/hw/ppc440_bamboo.c
+++ b/hw/ppc440_bamboo.c
@@ -177,7 +177,6 @@ static QEMUMachine bamboo_machine = {
     .alias = "bamboo",
     .desc = "bamboo",
     .init = bamboo_init,
-    .is_default = 1,
 };
 
 static QEMUMachine bamboo_machine_v0_12 = {