During his opening monologue Saturday night, Garner appeared on stage to jokingly reprimand Affleck for his poor choice of words.
"I'm not sure why you had to share it live to a billion people," Garner said.
"I would have said, 'Thank you to my wife, our marriage is a gift!'" she added.
While picking up his Academy Award for Best Picture in February, Affleck called his marriage to Garner "work."
"I want to thank my wife who I don't usually associate with Iran. I want to thank you for working on our marriage for 10 Christmases. It's good. It is work but it's the best kind of work and there's no one I'd rather work with," Affleck said.
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