diff --git a/module3/exo1/analyse-syndrome-grippal.ipynb b/module3/exo1/analyse-syndrome-grippal.ipynb
index c11cb7460c20cec58b83a70e551eaab159bdb64a..84dc5a90714e41a7e85a0fdeee9b9127eda30ffb 100644
--- a/module3/exo1/analyse-syndrome-grippal.ipynb
+++ b/module3/exo1/analyse-syndrome-grippal.ipynb
@@ -28,7 +28,7 @@
   },
   {
    "cell_type": "code",
-   "execution_count": 2,
+   "execution_count": 1,
    "metadata": {},
    "outputs": [
     {
@@ -37,7 +37,7 @@
        "'https://app-learninglab.inria.fr/moocrr/gitlab/8d8f65243a3005308e219351e328782f/mooc-rr/raw/master/module3/exo1/incidence-PAY-3.csv?inline=false'"
       ]
      },
-     "execution_count": 2,
+     "execution_count": 1,
      "metadata": {},
      "output_type": "execute_result"
     }
@@ -47,6 +47,20 @@
     "data_url"
    ]
   },
+  {
+   "cell_type": "code",
+   "execution_count": null,
+   "metadata": {},
+   "outputs": [],
+   "source": [
+    "data_file = \"incidence-PAY-3.csv\"\n",
+    "\n",
+    "import os\n",
+    "import urllib.request\n",
+    "if not os.path.exists(data_file):\n",
+    "    urllib.request.urlretrieve(data_url, data_file)"
+   ]
+  },
   {
    "cell_type": "markdown",
    "metadata": {},