diff --git a/module2/exo4/exercice.ipynb b/module2/exo4/exercice.ipynb
index c6f02f6f7b4b693b04a99b716e995581b4d8254d..e288f593c4a947b496db220b5671942a41652d8a 100644
--- a/module2/exo4/exercice.ipynb
+++ b/module2/exo4/exercice.ipynb
@@ -1,5 +1,12 @@
 {
  "cells": [
+  {
+   "cell_type": "markdown",
+   "metadata": {},
+   "source": [
+    "# Journal de bord"
+   ]
+  },
   {
    "cell_type": "code",
    "execution_count": null,