diff --git a/lib/nova b/lib/nova
index 9809e6275f..9632a8c5e9 100644
--- a/lib/nova
+++ b/lib/nova
@@ -224,9 +224,9 @@ function configure_nova() {
         # Get the sample configuration file in place
         cp $NOVA_DIR/etc/nova/api-paste.ini $NOVA_CONF_DIR
 
-        iniset $NOVA_API_PASTE_INI filter:authtoken auth_host $SERVICE_HOST
+        iniset $NOVA_API_PASTE_INI filter:authtoken auth_host $KEYSTONE_AUTH_HOST
         if is_service_enabled tls-proxy; then
-            iniset $NOVA_API_PASTE_INI filter:authtoken auth_protocol $SERVICE_PROTOCOL
+            iniset $NOVA_API_PASTE_INI filter:authtoken auth_protocol $KEYSTONE_AUTH_PROTOCOL
         fi
         iniset $NOVA_API_PASTE_INI filter:authtoken admin_tenant_name $SERVICE_TENANT_NAME
         iniset $NOVA_API_PASTE_INI filter:authtoken admin_user nova