libvirt issue - cannot undefine domain with nvram

Problem: 

virsh -c qemu:///system undefine <domain name> 

error: Failed to undefine domain <domain name>

error: Requested operation is not valid: cannot undefine domain with nvram

Solution:

$ virsh -c qemu:///system undefine --nvram <domain name> 

Domain <domain name> has been undefined