diff --git a/api-ref/src/wadls/compute-api/src/v2/ext/os-admin-actions.wadl b/api-ref/src/wadls/compute-api/src/v2/ext/os-admin-actions.wadl
index 2de7414b1..746e7ca78 100644
--- a/api-ref/src/wadls/compute-api/src/v2/ext/os-admin-actions.wadl
+++ b/api-ref/src/wadls/compute-api/src/v2/ext/os-admin-actions.wadl
@@ -566,7 +566,7 @@
                             in the request body.</para>
                     </wadl:doc>
                 </param>
-                <param name="host" style="plain" required="true"
+                <param name="host" style="plain" required="false"
                     type="xsd:string">
                     <wadl:doc xmlns="http://docbook.org/ns/docbook"
                         xml:lang="EN" title="Host"><para>The name or