diff --git a/prototyping/sorting_algo.py b/prototyping/sorting_algo.py
index 00a454e..7deee60 100644
--- a/prototyping/sorting_algo.py
+++ b/prototyping/sorting_algo.py
@@ -9,9 +9,8 @@ class Rule(NamedTuple):
 
 
 def is_rule_satisfied(in_list: list, rule: Rule) -> bool:
-    child_val, parent_val = rule
-    child_index = in_list.index(child_val)
-    parent_index = in_list.index(parent_val)
+    child_index = in_list.index(rule.child)
+    parent_index = in_list.index(rule.parent)
     return parent_index < child_index