diff --git a/module3/exo1/analyse-syndrome-grippal.ipynb b/module3/exo1/analyse-syndrome-grippal.ipynb
index 758a1eea060bb097ae10e900f4a165fccf7aa7a8..5f14a9aa50613f669091f2c447dce77af7f49b95 100644
--- a/module3/exo1/analyse-syndrome-grippal.ipynb
+++ b/module3/exo1/analyse-syndrome-grippal.ipynb
@@ -34,7 +34,7 @@
    },
    "outputs": [],
    "source": [
-    "data_path_filename = \"incidence-PAY-3.csv\"
+    "data_path_filename = \"incidence-PAY-3.csv"\"
    ]
   },
   {