diff --git a/nova/virt/libvirt/driver.py b/nova/virt/libvirt/driver.py
index 712fb1a03102..2217a2cdaee8 100644
--- a/nova/virt/libvirt/driver.py
+++ b/nova/virt/libvirt/driver.py
@@ -5145,8 +5145,6 @@ class LibvirtDriver(driver.ComputeDriver):
             root_device_name = None
 
         if root_device_name:
-            # NOTE(yamahata):
-            # for nova.api.ec2.cloud.CloudController.get_metadata()
             instance.root_device_name = root_device_name
 
         guest.os_type = (fields.VMMode.get_from_instance(instance) or