diff --git a/qapi/machine.json b/qapi/machine.json
index 6afd1936b0..5f1f50d3ed 100644
--- a/qapi/machine.json
+++ b/qapi/machine.json
@@ -1074,7 +1074,7 @@
 #
 # -> { "execute": "query-balloon" }
 # <- { "return": {
-#          "actual": 1073741824,
+#          "actual": 1073741824
 #       }
 #    }
 #