diff --git a/ocaml/libs/xapi-rrd/lib/rrd_updates.ml b/ocaml/libs/xapi-rrd/lib/rrd_updates.ml
index e1e3a98f88d..d9de5b045b5 100644
--- a/ocaml/libs/xapi-rrd/lib/rrd_updates.ml
+++ b/ocaml/libs/xapi-rrd/lib/rrd_updates.ml
@@ -194,9 +194,9 @@ let json_of_t t =
             ; ("rows", int (Array.length t.data))
             ; ("columns", int (Array.length t.legend))
             ; ("legend", array (map_to_list string t.legend))
-            ; ("data", array (map_to_list data_record t.data))
             ]
         )
+      ; ("data", array (map_to_list data_record t.data))
       ]
   in
   Yojson.to_string meta