conquest victory with two vassals???

[graves_09]

So i was trying to get my first space race victory on BTS and as I was getting closer to it (and also bored from no wars) I decided to attack Asoka for fun. Washington was already my vassal and after seeing my treasury drop from colony maintenance, I let Asoka capitulate to me. These were the only two CIVs remaining. Then when the turn ended it said I had won a conquest victory. Is this a new feature, bug or what?

 

[SlipperyJim]

Vassals don't count as "enemies" for the purposes of a Conquest victory. Therefore, once you've conquered everyone except your vassals, you win!

If you had to conquer your vassals, too ... you'd never be able to get a Conquest victory without disabling vassal states.

 

[Bast]

Nope, no bug. You've conquered them all.

 

[graves_09]

Ah, that is sort of what i figured.
Thanks for the reply.