diff --git a/ESP-IDF_Robot/main/blink_example_main.c b/ESP-IDF_Robot/main/blink_example_main.c
index 004f46a34..a3bfaee83 100644
--- a/ESP-IDF_Robot/main/blink_example_main.c
+++ b/ESP-IDF_Robot/main/blink_example_main.c
@@ -92,7 +92,8 @@ static uint8_t s_led_state = 0;
 static QueueHandle_t espnow_queue;
 //static uint8_t broadcast_mac[ESP_NOW_ETH_ALEN] = {0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF};
 static uint8_t broadcast_mac[ESP_NOW_ETH_ALEN] = {0x54, 0x32, 0x04, 0x46, 0x71, 0x80};
-static uint8_t robot_mac[ESP_NOW_ETH_ALEN] = {0xE4, 0xB0, 0x63, 0x17, 0x9E, 0x45};
+static uint8_t robot_mac[ESP_NOW_ETH_ALEN] = {0xE4, 0xB0, 0x63, 0x17, 0x9E, 0x45};      // MAC address of Robot
+static uint8_t
 static uint8_t espnow_seq[ESPNOW_DATA_MAX] = {0, 0};
 static uint8_t espnow_broadcast_mac[ESP_NOW_ETH_ALEN] = {};
 typedef struct struct_message {