diff --git a/ESP-IDF_Robot/tutorial/docs/source/overview.rst b/ESP-IDF_Robot/tutorial/docs/source/overview.rst
index f82e67ca7..b8c3ac2c2 100644
--- a/ESP-IDF_Robot/tutorial/docs/source/overview.rst
+++ b/ESP-IDF_Robot/tutorial/docs/source/overview.rst
@@ -32,7 +32,8 @@ direction of the RC car.
 Based on this constraint, the RC car can only move front, back, and turn/rotate left and right. Any other movements are not 
 possible (i.e. diagonal or sideways).
 
-PWM<sub>(left)</sub> = PWM<sub>(right)</sub>
+.. math::
+    PWM<sub>(left)</sub> = PWM<sub>(right)</sub>
 
 +--------------------------+-------------------------------+
 | PWM of DC Motors         | Direction                     |