If you’re still eating at Taco Bell, you’ll want to check out the allegations of a Southern California woman, who says the fast-food giant’s seasoned ground beef technically isn’t beef at all. The woman is waging a class-action suit against Taco Bell for false advertising.

According to the lawsuit, a test of Taco Bell’s taco filling found it was made up of 35 percent solids, of which just 15 percent were protein. In all, the “ground beef” was found to contain some beef and seasonings—as well as lots of fillers, including water, isolated oat product, wheat oats, soy lecithin, maltodextrin, anti-dusting agent, autolyzed yeast extract, modified corn starch and sodium phosphate.

"Taco Bell's definition of 'seasoned beef' does not conform to consumers' reasonable expectation or ordinary meaning of seasoned beef, which is beef and seasonings," the suit says.