diff --git a/pallas-txbuilder/src/transaction/model.rs b/pallas-txbuilder/src/transaction/model.rs
index b609773..52c8387 100644
--- a/pallas-txbuilder/src/transaction/model.rs
+++ b/pallas-txbuilder/src/transaction/model.rs
@@ -453,7 +453,7 @@ impl Output {
 
     pub fn set_datum_hash(mut self, datum_hash: Hash<32>) -> Self {
         self.datum = Some(Datum {
-            kind: DatumKind::Inline,
+            kind: DatumKind::Hash,
             bytes: datum_hash.to_vec().into(),
         });