diff --git a/pyrival/graphs/binary_lifting_on_tree.py b/pyrival/graphs/binary_lifting_on_tree.py
index cd31587..9b8b1b6 100644
--- a/pyrival/graphs/binary_lifting_on_tree.py
+++ b/pyrival/graphs/binary_lifting_on_tree.py
@@ -35,7 +35,7 @@
 
    res = Path[0]
    for node in Path[1:]:
-     res = f(res, node)
+     res = f(res, data[node])
    return res
    
    Example: