diff --git a/book/10-orientacao-objetos/05-polimorfismo.ipynb b/book/10-orientacao-objetos/05-polimorfismo.ipynb
index be930e5..7c29d50 100644
--- a/book/10-orientacao-objetos/05-polimorfismo.ipynb
+++ b/book/10-orientacao-objetos/05-polimorfismo.ipynb
@@ -281,11 +281,7 @@
   {
    "cell_type": "code",
    "execution_count": 2,
-   "metadata": {
-    "tags": [
-     "raise-exception"
-    ]
-   },
+   "metadata": {},
    "outputs": [
     {
      "name": "stdout",