A Quarter Pounder.
Courtesy of McDonald’s
August 12, 2015 12:11 PM EDT

Fast food giant McDonald’s has quietly made a change to one its most popular items: the Quarter Pounder.

The sandwich now defies burger math and includes 4.25 ounces of beef, slightly more than its former size of 4 ounces before cooking.

No word on how much the beef shrinks after hitting the grill, but the former 4-ounce patty cooked down to 2.8 ounces after heating.

McDonald’s was not immediately available for comment about the change.

The bigger burger follows an uptick in beef prices at the chain during the last quarter.

On its most recent earnings call, the chain noted domestic commodity costs…

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