HBO has digitally removed a coffee cup from the latest episode of "Game of Thrones," days after eagle-eyed viewers spotted something that was out of place in Winterfell.

[WARNING: The following contains spoilers from "Game of Thrones"]

The cup, which was first spotted by a Reddit user, appears during a scene from Season 8, Episode 4, while Jon Snow and Tormund Giantsbane celebrate the victory over the Night King.

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The camera pans to Daenerys Targaryen, who is sipping wine, when the cup from out of the realm appears sitting on the table: a disposable coffee cup that was left while the scene was being prepped.

The network already apologized for the error, admitting their mistake in a statement to us on Monday.

"The latte that appeared in the episode was a mistake. Daenerys had ordered an herbal tea," HBO said.

The show's art director, Hauke Richter, told TMZ the coffee cup was from a local shop in Banbridge, Northern Ireland, where the show filmed.

Fox News' Ryan Gaydos contributed to this report.