diff --git a/ESP-IDF_Robot/main/blink_example_main.c b/ESP-IDF_Robot/main/blink_example_main.c
index 882ef6987..29676b609 100644
--- a/ESP-IDF_Robot/main/blink_example_main.c
+++ b/ESP-IDF_Robot/main/blink_example_main.c
@@ -38,7 +38,7 @@ TIMER RESOLUTION    MAX VALUE   HALF-DUTY
 //#define LEDC_DUTY               (1000)
 #define LEDC_DUTY               (512) // 512, 768
 //#define LEDC_DUTY               (4096)
-#define LEDC_FREQUENCY          (50) // For LED the freuqncy of 500Hz seemed to be sufficient. // Frequency in Hertz. For DC motor, set frequency at 5 kHz
+#define LEDC_FREQUENCY          (500) // For LED the freuqncy of 500Hz seemed to be sufficient. // Frequency in Hertz. For DC motor, set frequency at 5 kHz
 
 /* Use project configuration menu (idf.py menuconfig) to choose the GPIO to blink,
    or you can edit the following line and set a number here.