diff --git a/03_classification.ipynb b/03_classification.ipynb
index f088b87..4dd82ac 100644
--- a/03_classification.ipynb
+++ b/03_classification.ipynb
@@ -2405,7 +2405,6 @@
     "            for word, count in word_count.items():\n",
     "                total_count[word] += min(count, 10)\n",
     "        most_common = total_count.most_common()[:self.vocabulary_size]\n",
-    "        self.most_common_ = most_common\n",
     "        self.vocabulary_ = {word: index + 1 for index, (word, count) in enumerate(most_common)}\n",
     "        return self\n",
     "    def transform(self, X, y=None):\n",