diff --git a/roulette.ipynb b/roulette.ipynb
index bdd638f..43d9eb4 100644
--- a/roulette.ipynb
+++ b/roulette.ipynb
@@ -186,7 +186,6 @@
     }
    ],
    "source": [
-    "import numpy as np\n",
     "import matplotlib.pyplot as plt\n",
     "\n",
     "Tab = []\n",