Ceiling Fan Light Kit installation - question about the white wire(s)

I am installing a new 3-bulb light kit onto my existing Casanova Ceiling Fan. The light kit instructions direct the white wire (light kit) to be connected to the white wire in the fan switch hub. But the switch hub has two white wires coming out of it, connected to each other with a wire nut. Can anyone tell me how to connect the white wires in this situation? Thanks!