RNDIS interface gets a gateway

I have a Linux device that utilizes USB gadget for RNDIS support. The goal was to be able to connect any computer this device without having to mess with IP settings. I've set a static IP address on my RNDIS device. As far as communication goes, everything works. What does not work is my host PC seems to add my RNDIS device as a gateway, thus losing internet connection. I can remote the gateway route each time I plug in my device, but this reduces the user experience. How do I modify my RNDIS configuration in order for my host PC to not add a gateway?