diff --git a/ESP-IDF_Robot/tutorial/docs/source/overview.rst b/ESP-IDF_Robot/tutorial/docs/source/overview.rst
index 713878e50..79f9c4ec0 100644
--- a/ESP-IDF_Robot/tutorial/docs/source/overview.rst
+++ b/ESP-IDF_Robot/tutorial/docs/source/overview.rst
@@ -27,7 +27,7 @@ Based on this constraint, the RC car can only move front, back, and turn/rotate
 
 .. admonition:: What is PWM?
 
-    **PWM** (Pulse Width Modulation) is a technique used to simulate analog voltage levels using ddiscrete igital signals. It works by rapidly switching a 
+    **PWM** stands for Pulse Width Modulation. It is a technique used to simulate analog voltage levels using discrete digital signals. It works by rapidly switching a 
     digital pin between HIGH (on) and LOW (off) states at a fixed frequency (often, at base frequency of 5 kHz). The duty cycle—the percentage of time the signal is HIGH in one 
     cycle determines the effective voltage delivered to a device.