diff --git a/qom/container.c b/qom/container.c
index 14e7ae485b..455e8410c6 100644
--- a/qom/container.c
+++ b/qom/container.c
@@ -16,7 +16,6 @@
 
 static const TypeInfo container_info = {
     .name          = "container",
-    .instance_size = sizeof(Object),
     .parent        = TYPE_OBJECT,
 };