Certificate Validation Process

All, I have one minor issue to ask the group about. Using Freeradius to authenticate 802.1X wireless clients, I noticed that if I try to connect to the wireless network and I purposely put in a bad password I still get the popup to validate the server certificate. On the other radius implementations I am used to the cert validation does not happen until after the user is authenticated. I imagine I have something configured not quite right but I don't know what. So, in Freeradius is there a way to change it so the validate server certificate comes only after successfull authentication? Thanks much, Mike