diff --git a/qom/object.c b/qom/object.c
index bc39ad4b99..b0ed560fd8 100644
--- a/qom/object.c
+++ b/qom/object.c
@@ -494,10 +494,8 @@ static void object_class_property_init_all(Object *obj)
     }
 }
 
-static void object_initialize_with_type(void *data, size_t size, TypeImpl *type)
+static void object_initialize_with_type(Object *obj, size_t size, TypeImpl *type)
 {
-    Object *obj = data;
-
     type_initialize(type);
 
     g_assert(type->instance_size >= sizeof(Object));