diff --git a/parts/2/notes.md b/parts/2/notes.md
index dcab1ff..0173fc0 100644
--- a/parts/2/notes.md
+++ b/parts/2/notes.md
@@ -2,5 +2,5 @@ Exercises:
 * [X] 2.1
 * [X] 2.2
 * [X] 2.3
-* [ ] 2.4
+* [X] 2.4
 * [X] 2.5