Minnesota Vikings fans committed a cardinal sin in Philadelphia on Sunday.

Ahead of the Vikes’ NFC Championship Game with the Eagles, Minnesota Fans invaded the Museum of Art’s front steps — more famously known as “the Rocky Steps.” And, unsurprisingly, the hoard of Vikings loyalists busted out yet another “Skol” chant.

Check this out:

And here’s another angle:

As if that wasn’t enough to enrage Philly natives, Vikings fans also updated the Rocky statue’s wardrobe.

That is just unforgivable.

Is the “Skol” chant getting a bit insufferable? Probably. Still, it was hard to not get goosebumps when Case Keenum led the rally cry in the final moments of the Vikings’ thrilling win over the New Orleans Saints last week.