diff --git a/ESP-IDF_Robot/tutorial/docs/source/overview.rst b/ESP-IDF_Robot/tutorial/docs/source/overview.rst
index cf737bb5b..9f5567d7d 100644
--- a/ESP-IDF_Robot/tutorial/docs/source/overview.rst
+++ b/ESP-IDF_Robot/tutorial/docs/source/overview.rst
@@ -39,9 +39,9 @@ In particular, **GPIO6** and **GPIO5** provide PWM to the left- and right- side
 Similarly, **GPIO4** and **GPIO7** provide PWM to the left- and right- side DC motors to rotate in a **counter-clockwise** direction.
 Changing PWM on each channel determines the speed and direction of the RC car.
 
-+-----------+-------+----------+
-| GPIOs     | State | Function |
-+===========+=======+==========+
++-----------+-------+-------------+----------+
+| GPIOs     | State | Description | Function |
++===========+=======+=============+==========+
 | GPIO6 &   | PWM   | Forward  |
 | GPIO4     |       |          |
 +-----------+-------+----------+