diff --git a/Tp09/merge_sort.py b/Tp09/merge_sort.py
index 23d33ac58c18408dd150538991aeb9e8f4b86ed5..0c016e04574e488243f6f949e12cd3c0091b40a2 100755
--- a/Tp09/merge_sort.py
+++ b/Tp09/merge_sort.py
@@ -105,7 +105,11 @@ def list_to_native(li: ApLst) -> list[T]:
     $$$ list_to_native(ApLst(3, ApLst(1, ApLst(4, ApLst(1, ApLst(5, ApLst()))))))
     [3, 1, 4, 1, 5]
     """
-    ...
+    res = []
+    while not li.is_empty():
+        res.append(li.head())
+        li = li.tail()
+    return res
 
 
 def is_sorted(l: ApLst, comp: Callable[[T, T], int]=compare) -> bool: