diff --git a/drivers/nvdimm/bus.c b/drivers/nvdimm/bus.c
index 19f822d..8111b12 100644
--- a/drivers/nvdimm/bus.c
+++ b/drivers/nvdimm/bus.c
@@ -783,6 +783,9 @@
 {
 	int rc;
 
+	BUILD_BUG_ON(sizeof(struct nd_smart_payload) != 128);
+	BUILD_BUG_ON(sizeof(struct nd_smart_threshold_payload) != 8);
+
 	rc = bus_register(&nvdimm_bus_type);
 	if (rc)
 		return rc;