If she didn’t before, Karlie Kloss now knows not to cross the Swifties. On Tuesday, Kloss posted an Instagram video of herself playing basketball for day 31 of LOVE magazine’s advent calendar and captioned it “Swish Swish.” Innocent basketball reference, right? Wrong. Per People, after apparently seeing comments from Swift’s fans, Kloss changed the caption to “Nothing but net”—another cliché but less polarizing basketball reference.

If you need some backstory and aren’t too exhausted by this conflict already, here goes: Swifties immediately assumed that Swift’s longtime pal was borrowing a phrase from Katy Perry, whose May 2017 single, “Swish Swish,” was seen as a direct reply to Swift’s 2014 revenge beat, “Bad Blood.” Whether this was her intention or not, Kloss got the hint and changed the caption.

After a brief resurgence in the wake of “Swish Swish” and the snake imagery that promoted the launch of Swift’s new album, Reputation, the Swift-Perry feud seemed to have lost its place in pop-culture prominence. Perry told Arianna Huffington in June that she had forgiven Swift and apologized for anything she did, but since neither Swift nor Perry has publicly announced that they’ve made up, most fans likely assume Perry’s still public enemy number something.

As for Kloss and Swift? Per People, fans started to murmur about the two’s falling out after Swift debuted her “Look What You Made Me Do” music video late last summer, when Kloss’s name didn’t appear on her T-shirt of squad members, or “Junior Jewels.”

As a source told Us Weekly at the end of August, the pair are still good friends. “Taylor respects Karlie so much for doing her own thing and being smart,” the source told Us. “Taylor has so much admiration for her, especially for educating girls with coding.”

Still, if we know anything about Swifties, they are loyal. And making Katy Perry references—intentional or not—will not keep anyone in their good graces.