People either love or hate spoilers. While some fans will seek out and dissect every possible plot line for shows like Game of Thrones and This Is Us, others prefer to be surprised. Stranger Things star David Harbour, who plays Chief Hopper in the Netflix series, is making things pretty easy for the former group — too easy, if you ask the show’s creators. The actor apparently can’t stop spilling inside scoop, leading the show’s producers to ban him from finding out plot points.

During a Vulture Festival panel over the weekend, Stranger Things creators Matt and Ross Duffer, as well as cast members Paul Reiser, Finn Wolfhard, and Linnea Berthelsen were on hand to answer fan questions about the runaway Netflix hit.

The panel shared several gems, including the fact that Reiser’s character was named “Dr. Reiser” even before the actor was cast in the role, and the rule that they can’t give Harbour any more information than is absolutely necessary, because, well, he’s kind of a blabbermouth.

“We can’t tell David anything anymore,” Matt Duffer deadpanned. “He’s cut off. He tweets it, he puts it on Instagram, he tells every journalist he can find … I’m not telling him anything.”

And while you might think there’s bad blood between the star and his producers, Harbour (who was not at the panel) seems to have a good sense of humor about the whole thing.

“Goal achieved. I get to watch season 3 with no spoilers,” he joked. “Most of the shooting will be me on a green screen wildly looking around and slowly enunciating the alphabet backwards that will later be magically crafted into words and dubbed by Antonio Banderas.”

Clearly, everyone’s in on the laugh. Here’s to hoping that the actor will take the jokes to heart, though. No one likes an *accidental* spoiler.

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(Photo via Dimitrios Kambouris/Getty)