diff --git a/data_structures/binary_tree/lowest_common_ancestor.py b/data_structures/binary_tree/lowest_common_ancestor.py
index 8be08ac44..c5b3ff3c2 100644
--- a/data_structures/binary_tree/lowest_common_ancestor.py
+++ b/data_structures/binary_tree/lowest_common_ancestor.py
@@ -143,7 +143,7 @@ def main() -> None:
     The sample tree used is:
 
                 1
-             /  |  \ 
+             /  |  \
             2   3   4
            /   / \\   \\
           5   6   7   8