diff --git a/module2/exo1/toy_notebook_fr.ipynb b/module2/exo1/toy_notebook_fr.ipynb
index 863cad2033e5b0177394ab1e199500ae36a353de..0b017992e7670b5d1d83da8d122ce6c7ad1bf13b 100644
--- a/module2/exo1/toy_notebook_fr.ipynb
+++ b/module2/exo1/toy_notebook_fr.ipynb
@@ -1,5 +1,12 @@
 {
  "cells": [
+  {
+   "cell_type": "markdown",
+   "metadata": {},
+   "source": [
+    "# À propos de pi"
+   ]
+  },
   {
    "cell_type": "code",
    "execution_count": 1,
@@ -18,6 +25,13 @@
     "print(pi)"
    ]
   },
+  {
+   "cell_type": "markdown",
+   "metadata": {},
+   "source": [
+    "[Aiguille de Buffon](https://fr.wikipedia.org/wiki/Aiguille_de_Buffon \"titre de lien optionnel\")"
+   ]
+  },
   {
    "cell_type": "code",
    "execution_count": 2,
@@ -95,13 +109,6 @@
    "source": [
     "4*np.mean(accept)"
    ]
-  },
-  {
-   "cell_type": "code",
-   "execution_count": null,
-   "metadata": {},
-   "outputs": [],
-   "source": []
   }
  ],
  "metadata": {