diff --git a/api-ref/src/wadls/compute-api/src/v2.1/wadl/os-services-v2.1.wadl b/api-ref/src/wadls/compute-api/src/v2.1/wadl/os-services-v2.1.wadl
index 07aa395d9..56ca12639 100644
--- a/api-ref/src/wadls/compute-api/src/v2.1/wadl/os-services-v2.1.wadl
+++ b/api-ref/src/wadls/compute-api/src/v2.1/wadl/os-services-v2.1.wadl
@@ -183,5 +183,6 @@
             </representation>
         </request>
         <response status="202"/>
+        <response status="404"/>
     </method>
 </application>