diff --git a/module3/exo1/analyse-syndrome-grippal.ipynb b/module3/exo1/analyse-syndrome-grippal.ipynb
index 1526dbcc3c9aec432e918bfae1f1ab49e979cb14..5c1f1d436db0487e958d9cedac74e183b5e8a062 100644
--- a/module3/exo1/analyse-syndrome-grippal.ipynb
+++ b/module3/exo1/analyse-syndrome-grippal.ipynb
@@ -1046,7 +1046,13 @@
     }
    ],
    "source": [
-    "raw_data = pd.read_csv(data_2, skiprows=1)\n",
+    "try:\n",
+    "    raw_data = pd.read_csv(data_2, skiprows=1)\n",
+    "except:\n",
+    "    try:\n",
+    "        raw_data = pd.read_csv(data_url, skiprows=1)\n",
+    "    except:\n",
+    "        print(\"Error : the file doesn't exist\")\n",
     "raw_data"
    ]
   },
@@ -2223,7 +2229,7 @@
     {
      "data": {
       "text/plain": [
-       "<matplotlib.axes._subplots.AxesSubplot at 0x7f37bcca7748>"
+       "<matplotlib.axes._subplots.AxesSubplot at 0x7f356d713748>"
       ]
      },
      "execution_count": 10,
@@ -2262,7 +2268,7 @@
     {
      "data": {
       "text/plain": [
-       "<matplotlib.axes._subplots.AxesSubplot at 0x7f37baa82518>"
+       "<matplotlib.axes._subplots.AxesSubplot at 0x7f356b550be0>"
       ]
      },
      "execution_count": 11,
@@ -2366,7 +2372,7 @@
     {
      "data": {
       "text/plain": [
-       "<matplotlib.axes._subplots.AxesSubplot at 0x7f37ba987978>"
+       "<matplotlib.axes._subplots.AxesSubplot at 0x7f356b45d1d0>"
       ]
      },
      "execution_count": 14,
@@ -2467,7 +2473,7 @@
     {
      "data": {
       "text/plain": [
-       "<matplotlib.axes._subplots.AxesSubplot at 0x7f37ba96b390>"
+       "<matplotlib.axes._subplots.AxesSubplot at 0x7f356b43af98>"
       ]
      },
      "execution_count": 16,