diff --git a/openmls/src/treesync/node/leaf_node.rs b/openmls/src/treesync/node/leaf_node.rs
index 54334d9cae..c66b0b0fb0 100644
--- a/openmls/src/treesync/node/leaf_node.rs
+++ b/openmls/src/treesync/node/leaf_node.rs
@@ -834,7 +834,7 @@ impl Verifiable for VerifiableUpdateLeafNode {
     fn unsigned_payload(&self) -> Result<Vec<u8>, tls_codec::Error> {
         LeafNodeTbs {
             payload: self.payload.clone(),
-            tree_info_tbs: TreeInfoTbs::Commit(self.tree_position.clone()),
+            tree_info_tbs: TreeInfoTbs::Update(self.tree_position.clone()),
         }
         .tls_serialize_detached()
     }