diff --git a/web/support/kb/openstack/gnocchi.rst b/web/support/kb/openstack/gnocchi.rst
index 7eab08eb1985ae2e29e68f5f61c0a589b6435195..f0d13e039f488f93703c2b35d016cf5b8717351b 100644
--- a/web/support/kb/openstack/gnocchi.rst
+++ b/web/support/kb/openstack/gnocchi.rst
@@ -129,7 +129,7 @@ View the resource usage of a specific resource::
 
 Another example::
 
-    $ gnocchi measures show --resource-id 06e76595-4155-4bbc-a7ec-8ea99117f019 disk.usage
+    $ gnocchi measures show --resource-id 06e76595-4155-4bbc-a7ec-8ea99117f019 --start 2017-07-14T20:35 disk.usage
     +---------------------------+-------------+------------+
     | timestamp                 | granularity |      value |
     +---------------------------+-------------+------------+