diff --git a/module3/exo1/analyse-syndrome-grippal.ipynb b/module3/exo1/analyse-syndrome-grippal.ipynb
index b6b965b3982777a8b0b52e6514be68096e112a2b..d31c68457b8fa5611b2e4f41885605fe6251a342 100644
--- a/module3/exo1/analyse-syndrome-grippal.ipynb
+++ b/module3/exo1/analyse-syndrome-grippal.ipynb
@@ -61,7 +61,7 @@
   },
   {
    "cell_type": "code",
-   "execution_count": 34,
+   "execution_count": 35,
    "metadata": {
     "scrolled": true
    },
@@ -1028,12 +1028,15 @@
        "[1933 rows x 10 columns]"
       ]
      },
-     "execution_count": 34,
+     "execution_count": 35,
      "metadata": {},
      "output_type": "execute_result"
     }
    ],
    "source": [
+    "# On essaie de lire le fichier csv local si il existe, sinon on le telecharge\n",
+    "# de maniere a avoir une copie locale\n",
+    "\n",
     "try:\n",
     "    raw_data = pd.read_csv(data_filename, skiprows=1)\n",
     "except FileNotFoundError:\n",