Clumsy bastard.

Justin Timberlake hurt his leg earlier this week while performing a stunt on the Los Angeles set of his upcoming sci-fi thriller Now, according to reports.

Entertainment Tonight reports that despite his injury, he continued shooting Wednesday and returned to work Thursday.

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More details on his prognosis should be available Friday.

Now — costarring Olivia Wilde and Amanda Seyfried — is due out next year.

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Pay attention dude!