diff --git a/doc/source/admin/deployment-philosophy.rst b/doc/source/admin/deployment-philosophy.rst
index b7ea59e740..1f82b7e52b 100644
--- a/doc/source/admin/deployment-philosophy.rst
+++ b/doc/source/admin/deployment-philosophy.rst
@@ -64,6 +64,7 @@ result, simply :command:`mkdir -p /etc/kolla/config` and modify the file
 
    [libvirt]
    virt_type=qemu
+   cpu_mode = none
 
 .. end