diff --git a/USAGE.md b/USAGE.md
index 6723dd6..8d7131f 100644
--- a/USAGE.md
+++ b/USAGE.md
@@ -103,13 +103,13 @@ This is not the best way to put code in production but it can help out in some o
 
 ### Limits
 
-* Only the graphic package `matplotlib.pyplot` as been tested. Use other graphic option at your on risk.
+* Only the graphic package `matplotlib.pyplot` as been tested. Other graphic package may not give back the hand.
 
-* Only python code can be executed, donnot try to use the package on notebook with julia or R.
+* Only python code can be executed. The package will **not** work on julia or R notebooks.
 
 * When executing a notebook via `boar` make sure the environment has all the package to run the notebook.
 
-* The package has not been developped to work recursively. Use at your own risk.
+* The package has not been developped to work recursively.
 
 ### Forbidden synthax
 
diff --git a/notebook/00-test-tutorial.ipynb b/notebook/00-test-tutorial.ipynb
index 1c6c886..6fc69df 100644
--- a/notebook/00-test-tutorial.ipynb
+++ b/notebook/00-test-tutorial.ipynb
@@ -93,7 +93,7 @@
     "        test_error_str = test_path.name.replace(\".ipynb\", \"\").split(\"-\")[0]\n",
     "        \n",
     "        test_error = None\n",
-    "        if test_error_str!=\"OK\":\n",
+    "        if test_error_str not in [\"OK\", \"Matplotlib\"]:\n",
     "            temp = {}\n",
     "            exec(f\"error = {test_error_str}\", temp)\n",
     "            test_error = temp[\"error\"] \n",
diff --git a/notebook/00-test/Matplotlib.ipynb b/notebook/00-test/Matplotlib.ipynb
new file mode 100644
index 0000000..d7e3621
--- /dev/null
+++ b/notebook/00-test/Matplotlib.ipynb
@@ -0,0 +1,69 @@
+{
+ "cells": [
+  {
+   "cell_type": "markdown",
+   "metadata": {},
+   "source": [
+    "# Matplotlib graph"
+   ]
+  },
+  {
+   "cell_type": "code",
+   "execution_count": null,
+   "metadata": {},
+   "outputs": [],
+   "source": [
+    "import numpy as np\n",
+    "import matplotlib.pyplot as plt\n",
+    "\n",
+    "%matplotlib inline"
+   ]
+  },
+  {
+   "cell_type": "code",
+   "execution_count": null,
+   "metadata": {},
+   "outputs": [],
+   "source": [
+    "x_vals = np.arange(1, 10, 0.5)\n",
+    "y_vals = (x_vals) * (x_vals - 5) * (x_vals - 7.5)  \n",
+    "\n",
+    "\n",
+    "plt.figure()\n",
+    "\n",
+    "plt.plot(x_vals, y_vals)\n",
+    "plt.scatter(x_vals, y_vals, color=\"r\", marker=\"x\")\n",
+    "\n",
+    "plt.show()"
+   ]
+  },
+  {
+   "cell_type": "markdown",
+   "metadata": {},
+   "source": [
+    "---"
+   ]
+  }
+ ],
+ "metadata": {
+  "kernelspec": {
+   "display_name": "Python 3",
+   "language": "python",
+   "name": "python3"
+  },
+  "language_info": {
+   "codemirror_mode": {
+    "name": "ipython",
+    "version": 3
+   },
+   "file_extension": ".py",
+   "mimetype": "text/x-python",
+   "name": "python",
+   "nbconvert_exporter": "python",
+   "pygments_lexer": "ipython3",
+   "version": "3.8.0"
+  }
+ },
+ "nbformat": 4,
+ "nbformat_minor": 2
+}
diff --git a/tests/test_testing_e2e.py b/tests/test_testing_e2e.py
index b178e9d..a56458c 100644
--- a/tests/test_testing_e2e.py
+++ b/tests/test_testing_e2e.py
@@ -6,10 +6,14 @@
 
 
 @pytest.mark.e2e
-def test_assert_notebook_runs_without_error() -> None:
+@pytest.mark.parametrize("notebook_name", [
+    "OK.ipynb",
+    "Matplotlib.ipynb",
+])
+def test_assert_notebook_runs_without_error(notebook_name) -> None:
     # Given
     from boar.testing import assert_notebook
-    notebook_path = Path(Notebook._00.value, "OK.ipynb")
+    notebook_path = Path(Notebook._00.value, notebook_name)
     verbose = True
 
     # When / Then