diff --git a/src/backend/nodes/outfuncs.c b/src/backend/nodes/outfuncs.c
index d746d6fee87..58c2590698c 100644
--- a/src/backend/nodes/outfuncs.c
+++ b/src/backend/nodes/outfuncs.c
@@ -3688,6 +3688,8 @@ _outConstraint(StringInfo str, const Constraint *node)
 			WRITE_BOOL_FIELD(is_no_inherit);
 			WRITE_NODE_FIELD(raw_expr);
 			WRITE_STRING_FIELD(cooked_expr);
+			WRITE_BOOL_FIELD(skip_validation);
+			WRITE_BOOL_FIELD(initially_valid);
 			break;
 
 		case CONSTR_PRIMARY: