Shake Shack, the beloved East Coast burger and custard chain, is being sued. The lawsuit doesn’t concern the quality of the restaurant’s food or service, but its interior décor.

Cindy Cirlin filed a Manhattan Supreme Court lawsuit last week after being allegedly attacked by a dog that was chained to one of the Upper East Side outposts’ chairs. According to court papers, Shake Shack “was negligent in its failure to protect [Cirlin] from the anticipated dangers of allowing dogs to be attached by leashes to its flimsy and unanchored chairs.”

The 86th Street location features a large garden plaza and lightweight, portable chairs. All locations are canine-friendly, offering dog biscuits as items on their regular menu.

Cirlin’s charges add to Shake Shack’s legal troubles this year — the restaurant was sued in July by a small business owner Robert Shapiro for bidding to open a location in the Grand Central terminal. [Huff]