diff --git a/module2/exo1/toy_notebook_en.ipynb b/module2/exo1/toy_notebook_en.ipynb
index 8e2871ae2542b9356d95d7af34e3d352702691de..8a9b807ebe8deaba2fabf47ccea35c65e81ab598 100644
--- a/module2/exo1/toy_notebook_en.ipynb
+++ b/module2/exo1/toy_notebook_en.ipynb
@@ -33,7 +33,15 @@
     "\n",
     "## Buffon's needle\n",
     "Applying the method of [Buffon's needle](https://en.wikipedia.org/wiki/Buffon%27s_needle_problem), we get the __approximation__\n",
-    "                        \n",
+    "                        \n"
+   ]
+  },
+  {
+   "cell_type": "code",
+   "execution_count": null,
+   "metadata": {},
+   "outputs": [],
+   "source": [
     "import numpy as np\n",
     "np.random.seed(seed=42)\n",
     "N = 10000\n",