Meta is about to make your chats with its AI assistant part of its advertising machine, the company announced Wednesday. Beginning December 16, conversations with Meta AI — the company’s chatbot embedded across Facebook, Instagram, Messenger, and even its new Ray-Ban Display smart glasses — will be used to determine which ads and recommendations show up in your feed.

The company will start formally notifying users of the change on October 7. There’s no opt-out: If you don’t want your chatbot conversations influencing your ads, the only option is not to use Meta AI at all.