On Sunday, Jeffrey Dean Morgan accidentally revealed that he and Hilarie Burton are expecting a baby girl. He was at a Supernatural convention in New Jersey.

Jeffrey later took to Instagram to share a photo from the event and explain.

According to JustJared.com, the 51-year-old actor wrote, “Whoever took this picture. Caught a moment… thank you. We shall cherish. I texted Hilarie Burton right after I spilled the little girl beans and, as usual, she was a rockstar. After all these years she’s come to expect me to be a dope… thank god she gets it, and loves me regardless (sic).”