diff --git a/Tutorial.ipynb b/Tutorial.ipynb
index 862db3d..4d7e797 100644
--- a/Tutorial.ipynb
+++ b/Tutorial.ipynb
@@ -302,10 +302,10 @@
    "source": [
     "from sklearn.naive_bayes import GaussianNB\n",
     "\n",
-    "clf_gnb = DecisionTreeClassifier()\n",
-    "clf_gnb.fit(train_x_vectors, train_y)\n",
+    "clf_gnb = GaussianNB()\n",
+    "clf_gnb.fit(train_x_vectors.todense(), train_y)\n",
     "\n",
-    "clf_gnb.predict(test_x_vectors[0])\n"
+    "clf_gnb.predict(test_x_vectors.todense()[0])"
    ]
   },
   {
@@ -376,7 +376,7 @@
     "# Mean Accuracy\n",
     "print(clf_svm.score(test_x_vectors, test_y))\n",
     "print(clf_dec.score(test_x_vectors, test_y))\n",
-    "print(clf_gnb.score(test_x_vectors, test_y))\n",
+    "print(clf_gnb.score(test_x_vectors.todense(), test_y))\n",
     "print(clf_log.score(test_x_vectors, test_y))"
    ]
   },