While Game of Thrones fans are counting down the days until the final season premieres on April 14, the cast has been busy making various appearances to promote it. Ahead of his Saturday Night Live debut, Kit Harington stopped by The Tonight Show With Jimmy Fallon on Thursday to talk all things Game of Thrones ... at least, as much as he could.

As the actor behind Jon Snow couldn’t really talk about the final season, the pair discussed getting prepared for SNL, the iconic Game of Thrones line “You know nothing, Jon Snow” (which Harington’s brother managed to sneak into his best man’s speech at the actor’s wedding to Rose Leslie), and finally, the fact that he is terrible at winking. This prompted Fallon to suggest they play a game where the talk show host would talk about a season 8 rumor, and Harington would respond to by either winking or blinking.

Unfortunately, since Harington seems to have an odd inability to wink, no spoilers were revealed.

We’ll see Harington play Jon Snow once more when Game of Thrones’s final season debuts next weekend.