diff --git a/module2/exo1/.ipynb b/module2/exo1/toy_notebook_mission_2.ipynb
similarity index 91%
rename from module2/exo1/.ipynb
rename to module2/exo1/toy_notebook_mission_2.ipynb
index 7b7ef1f0f337e8d908fdaa0b775e2ada16174fd9..6903aa4ce87d9d6ae160c92a3fa57f21e5ff3689 100644
--- a/module2/exo1/.ipynb
+++ b/module2/exo1/toy_notebook_mission_2.ipynb
@@ -75,8 +75,18 @@
    ]
   },
   {
-   "cell_type": "markdown",
+   "cell_type": "code",
+   "execution_count": 2,
    "metadata": {},
+   "outputs": [
+    {
+     "name": "stdout",
+     "output_type": "stream",
+     "text": [
+      "Hello, world!\n"
+     ]
+    }
+   ],
    "source": [
     "print(\"Hello, world!\")"
    ]