Google unveiled its new chat app, Google Allo, earlier this week. It’s loaded with tons of fun features and even a Google chatbot, but Edward Snowden doesn’t think you should use it.

Speaking on Twitter last night, Snowden suggested that, while it’s good that Google made end-to-end encryption an option in Allo, it’s really bad that the company decided to leave it off by default. Admittedly, it is a bit bizarre, considering chat apps like iMessage and WhatsApp are encrypted.

“Google’s decision to disable end-to-end encryption by default in its new #Allo chat app is dangerous, and makes it unsafe,” Snowden said on Twitter. “Avoid it for now.”

Snowden frequently recommends using only the most secure chat methods if you want to keep your conversations private — away from hackers and the U.S. government’s prying eyes. When Allo does launch, be sure to turn on end-to-end encryption.