ROCKFORD, Mich. (AP) — A western Michigan couple with 12 sons is expecting baby No. 13 and they say they’ll be surprised if their all-boy streak is snapped.

The Grand Rapids Press reports that Jay and Kateri Schwandt’s baby is due May 9 and they plan to follow their tradition of not finding out whether it’s a boy or girl in advance. They say they would welcome either into the family.

Kateri Schwandt says: “If we were to have a girl, I think we would go into shock.”

Jay Schwandt said he would love to have a girl, but they’re just “hoping for a healthy baby.”

The family lives in Rockford and their 12th boy, Tucker, was born Aug. 4, 2013. Their oldest boy is now 22 years old.