Courtesy of Patricia Del Rio

Danica McKellar and Mike Verta.

“Wonder Years” star Danica McKellar has filed for divorce, according to a new report.

The actress-turned-author filed for the split from husband Mike Verta, a composer, in Los Angeles County Superior Court, TMZ reported on Wednesday.

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She has reportedly asked for joint custody -- physical and legal -- of their son, Draco, who was born in September 2010.

After playing Winnie Cooper on “The Wonder Years,” McKellar went to college and became a math whiz and best-selling author.

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The actress has not addressed the filing on Twitter, but on Thursday, tweeted, “You cannot be lonely if you like the person you’re alone with. -- Dr. Wayne Dyer.”

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