We are currently in the middle of Season Seven of The Walking Dead, AMC’s hit zombie apocalypse series. But comic book fans will know that the series has actually existed for much longer, with the first issue of the comic being released all the way back in 2003. There are just over 160 issues (and counting) of the comic right now, and the show is slowly catching up.

That leaves fan wondering what will happen when the day eventually comes. Will they pull a Game of Thrones and just carry on with the unpublished story arcs? Will they venture off in their own creative direction? Will the television show even last that long?

Series creator Robert Kirkman shed just a tiny bit of light on the question in the letters section of a recent issue of the comic.

“It took us 6 seasons to get to 100 [issues],” Kirkman wrote, according to ComicBook.com. “It won’t take us 6 years to get to 200 and that will take us to season … TWELVE. And we’ll still be ahead of the show at that point.”

The events of the show are basically caught up to Issue #111, with the death of Spencer almost a frame by frame recreation of his death in the book. It would likely take the show another three seasons (at least) to catch up to where the comics are now, and in that time Kirkman and his team will be able to publish another 36 (or so) issues. So assuming that the ratings don’t fall off a cliff in the next few seasons, it looks like AMC can count on having The Walking Dead air on Sunday nights for years and years to come.