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PHILADELPHIA (CBS) — One Thanksgiving dinner staple has a dark secret. According to a Wall Street Journal report, your pumpkin pie is likely made from squash.

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Libby’s says it produces about 80 percent of the canned pumpkin filling sold in the U.S.

Credit: CBS3

It’s made with the “Dickinson” pumpkin, which some say is actually a squash.

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The FDA says it’s okay with labels calling it pumpkin if it’s prepared from “golden- fleshed, sweet squash or mixtures of such squash with field pumpkins.”