By Lanford Beard
Updated August 31, 2011 at 03:08 PM EDT

After six years of marriage, Robert Downey Jr. and his producer wife Susan have announced that they are expecting a child, reports People. They Downeys’ rep said, “Robert and Susan could not be more excited over this news. They can’t wait to welcome this new baby into their wonderful family.” Due in early 2012, the baby will have Downey’s 17-year-old son Indio as a sibling.

While promoting last year’s comedy Due Date, Downey predicted, “I think I will be wrist-deep in doo-doo within 18 months.” He added that he hopes for a daughter: “I don’t want Indio to feel there’s another boy in my life,” he said, then joked, “But I don’t know what we’d have to do [to have a girl]. Do we have to put it in a spoon and hang it upside-down?”