RouterOS as VPN Client without DNS from Peer

Hi,
I am using RouterOS as a VPN Client (IPsec) to add access to a separate subnet. The Server is a FritzBox. In this setup there is one thing I want to change: the FritzBox assigns a DNS server to RouterOS and it adds this DNS server to RotuerOS’s list of dynamic DNS servers. Is there any way I can configure the VPN to ignore the FritzBox’s DNS server so it is not added to the list of DNS server in RouterOS?