Even if you're from Illinois, you might have missed this huge error in the original "Home Alone movie."

And if it somehow got past you, you're far from the only one who is just now realizing the mistake.

Mistake Involving Buzz in 'Home Alone'

In the movie, young Kevin McCallister (Macaulay Culkin) is left behind as his family rushes to O'Hare International Airport to catch a flight to France. The 8-year-old doesn't seem to mind as he no longer has to put up the the bullying from his older brothers and sisters.

His teenage brother, Buzz (Devin Ratray) is a cocky high schooler that makes Kevin's life a living hell. While there are several clues telling the audience that Buzz is still in high school, the most telling is his letterman jacket from Maine South High School.

A recent post on X (formerly Twitter) calls out the movie for being incorrect when it comes to the McCallister family's school distract given the location of their house.

The house from "Home Alone" is located in north suburban Winnetka, inside the New Trier district. Maine South High School's district sits the the west.

Somehow this must have slipped past director John Hughes whose family moved to Northbrook in 1963. "Home Alone" was released in 1990.

Yet Another Error You May Have Missed In 'Home Alone'

As "Home Alone's" opening credits roll, it is absolute chaos in the McCallister house. Family members scurry in and out of the camera shot as Joe Pesci's character tries to get their attention.

Pesci plays one of the robbers who targets the home while the McCallisters are in France. He is able to do some recon early in the movie by disguising himself as a cop.

There's a lot going on in the scene so you might not have noticed the patch on the right arm on Pesci's jacket. While the home sits in the north suburbs, Pesci is wearing a jacket with a Chicago flag on it.

The Wet Bandits weren't the brightest criminals. Maybe he didn't know any different either.

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