President Trump on Thursday posted a photo of himself on Instagram, superimposed with the slogan “The Wall Is Coming”—an (incorrect) reference to the hit HBO series Game of Thrones. The post comes after Democrats have called on the president to abandon border wall funding as a condition for ending the government shutdown, which has left nearly 800,000 government workers without a paying job. With the Game of Thrones reference, Trump appears to have been reassuring his supporters that he still plans to build the wall he promised—but he apparently failed to realize that Game of Thrones’ once-impenetrable wall collapsed in Season 7.