diff --git a/module3/exo3/exercise.ipynb b/module3/exo3/exercise.ipynb
index 8c41ddfaf1a6ca738faf2341a6c142af3021ebd8..d48c2087c946db7a6171da0969609336508b1f56 100644
--- a/module3/exo3/exercise.ipynb
+++ b/module3/exo3/exercise.ipynb
@@ -7,7 +7,7 @@
     "hidePrompt": false
    },
    "source": [
-    "#  CO2 concentration by Donato Tiano"
+    "#  Subject 6: Around Simpson's Paradox by Donato Tiano"
    ]
   },
   {