diff --git a/tensorflow_v2/notebooks/0_Prerequisite/ml_introduction.ipynb b/tensorflow_v2/notebooks/0_Prerequisite/ml_introduction.ipynb
index aa271e04..226dd66f 100644
--- a/tensorflow_v2/notebooks/0_Prerequisite/ml_introduction.ipynb
+++ b/tensorflow_v2/notebooks/0_Prerequisite/ml_introduction.ipynb
@@ -1,7 +1,7 @@
 {
  "cells": [
   {
-   "cell_type": "code",
+   "cell_type": "markdown",
    "execution_count": null,
    "metadata": {},
    "outputs": [],