diff --git a/bip/src/bp.rs b/bip/src/bp.rs
index b86be8b..09d219e 100644
--- a/bip/src/bp.rs
+++ b/bip/src/bp.rs
@@ -156,7 +156,7 @@ impl Writer {
             let data_rec = self.data.get(id).ok_or(Error::NotDefined)?;
 
             let data = Node::new(
-                node.op.clone(),
+                NodeOp::Data,
                 data_rec
                     .iter()
                     .zip(node.entries.iter().collect::<Vec<&Node>>())