diff --git a/module2/exo1/toy_notebook_en.ipynb b/module2/exo1/toy_notebook_en.ipynb
index 16b0aed18bdb3b09ab0224443c187b058463bc7c..960d848e6e2ea99eb21f3f0f4fb382ae44dade8a 100644
--- a/module2/exo1/toy_notebook_en.ipynb
+++ b/module2/exo1/toy_notebook_en.ipynb
@@ -1,7 +1,6 @@
 {
  "cells": [],
  "metadata": {
-  "celltoolbar": "Hide code",
   "kernelspec": {
    "display_name": "Python 3",
    "language": "python",
@@ -17,7 +16,7 @@
    "name": "python",
    "nbconvert_exporter": "python",
    "pygments_lexer": "ipython3",
-   "version": "3.6.3"
+   "version": "3.6.2"
   }
  },
  "nbformat": 4,