diff --git a/content/TDs/S2/06_binaryTree.md b/content/TDs/S2/06_binaryTree.md
index 89976bf6..9ca6cf31 100644
--- a/content/TDs/S2/06_binaryTree.md
+++ b/content/TDs/S2/06_binaryTree.md
@@ -329,11 +329,8 @@ struct BinaryTree {
     void insert(int value);
     bool remove(int value);
     void clear();
-    bool contains(int value) const;
     size_t height() const;
 };
-
-bool contains(std::unique_ptr<SmartNode>& node, int value);
 ```
 
 1.  Créer un fichier `binaryTree.cpp` et implémenter les méthodes de la structure `BinaryTree`.