Old Navy is reprinting thousands of college T-shirts to correct an embarrassing error. The shirts debuted this month, featuring the names and mascots of dozens of schools. Printed at the top of each shirt are the words “Lets Go!!”

The problem is that “lets” is missing its apostrophe and the phrase should read 'Let's Go.” The shirts are part of Old Navy's new “Superfan Nation,” a just-launched in-store shop that sells college- and professional-licensed sports gear.

“We're sorry about the error in some of our Superfan Nation graphic T-shirts,” said Louise Callagy, a spokeswoman for parent company Gap Inc., in an e-mail. “To ensure Old Navy customers can enjoy this collection fully, we're replacing the faulty [T-shirts] at our stores and online as soon as possible.”