diff --git a/kernel/model/heading.go b/kernel/model/heading.go
index fd33c12db..53102b358 100644
--- a/kernel/model/heading.go
+++ b/kernel/model/heading.go
@@ -54,6 +54,7 @@ func (tx *Transaction) doFoldHeading(operation *Operation) (ret *TxErr) {
 				return ast.WalkContinue
 			}
 
+			n.SetIALAttr("fold", "1")
 			n.SetIALAttr("heading-fold", "1")
 			return ast.WalkContinue
 		})