diff --git a/libs/tree_fold/src/lib.rs b/libs/tree_fold/src/lib.rs
index e513b773..97e50b4f 100644
--- a/libs/tree_fold/src/lib.rs
+++ b/libs/tree_fold/src/lib.rs
@@ -121,9 +121,9 @@ pub fn two_way_tree_fold<O: Op>(
         }
     }
     TwoWayTreeFoldResult {
+        upper,
         lower,
         branch,
-        upper,
     }
 }