diff --git a/ESP-IDF_Robot/tutorial/docs/source/overview.rst b/ESP-IDF_Robot/tutorial/docs/source/overview.rst
index c502872a0..846ccf941 100644
--- a/ESP-IDF_Robot/tutorial/docs/source/overview.rst
+++ b/ESP-IDF_Robot/tutorial/docs/source/overview.rst
@@ -51,7 +51,7 @@ Changing PWM on each channel determines the speed and direction of the RC car.
 +------+-----+---------------------------------------------------------+----------------+
 
 Fusion of Software with Hardware
------------------------------
+------------------===-----------
 
 The *struct* for storing motors PWM values.