defrag.exe

Once I installed NAV, my (Comodo) firewall started asking "ds28.bat is trying to execute defrag.exe"...

 

Even though in NAV settings I've turned off "Idle Time Optimizer" (because auto defrag can lead to giant Ghost incrementals).

 

Can I tell NAV to stop trying to defrag.exe so I don't have to use my firewall to block it?

 

Thank you!