diff --git a/hw/mem/nvdimm.c b/hw/mem/nvdimm.c
index b703252527..cf8a4d8c5f 100644
--- a/hw/mem/nvdimm.c
+++ b/hw/mem/nvdimm.c
@@ -99,7 +99,7 @@ static void nvdimm_set_uuid(Object *obj, Visitor *v, const char *name,
 
 static void nvdimm_init(Object *obj)
 {
-    object_property_add(obj, NVDIMM_LABEL_SIZE_PROP, "int",
+    object_property_add(obj, NVDIMM_LABEL_SIZE_PROP, "size",
                         nvdimm_get_label_size, nvdimm_set_label_size, NULL,
                         NULL);