diff --git a/ESP-IDF_Robot/main/blink_example_main.c b/ESP-IDF_Robot/main/blink_example_main.c
index fef61bc33..9e163f827 100644
--- a/ESP-IDF_Robot/main/blink_example_main.c
+++ b/ESP-IDF_Robot/main/blink_example_main.c
@@ -57,6 +57,8 @@ static const char *TAG = "ESP IDF Robot";
 #define LEDC_TIMER              LEDC_TIMER_0
 #define LEDC_MODE               LEDC_LOW_SPEED_MODE // LEDC_LOW_SPEED_MODE
 #define LEDC_OUTPUT_IO          (5) // Define the output GPIO
+#define MTR_FRONT_LEFT_IO       ()
+#define MTR_FRONT_RIGHT_IO      (5)
 #define LEDC_CHANNEL            LEDC_CHANNEL_0          // Right side motors
 #define MTR_FRONT_LEFT          LEDC_CHANNEL_1
 #define MTR_FRONT_RIGHT         LEDC_CHANNEL_0