diff --git a/nova/api/openstack/compute/servers.py b/nova/api/openstack/compute/servers.py
index 6d4974fc2187..64be71d96fe9 100644
--- a/nova/api/openstack/compute/servers.py
+++ b/nova/api/openstack/compute/servers.py
@@ -59,6 +59,8 @@ CONF.import_opt('reclaim_instance_interval', 'nova.compute.manager')
 
 LOG = logging.getLogger(__name__)
 
+XML_WARNING = False
+
 
 def make_fault(elem):
     fault = xmlutil.SubTemplateElement(elem, 'fault', selector='fault')
@@ -74,6 +76,12 @@ def make_server(elem, detailed=False):
     elem.set('name')
     elem.set('id')
 
+    global XML_WARNING
+    if not XML_WARNING:
+        LOG.warning(_('XML support has been deprecated and will be removed '
+                      'in the Juno release.'))
+        XML_WARNING = True
+
     if detailed:
         elem.set('userId', 'user_id')
         elem.set('tenantId', 'tenant_id')