diff --git a/ESP32-IDF_ESPNOW-Transmitter/main/joystick.c b/ESP32-IDF_ESPNOW-Transmitter/main/joystick.c
index d8e19ae01..5e9f762ff 100644
--- a/ESP32-IDF_ESPNOW-Transmitter/main/joystick.c
+++ b/ESP32-IDF_ESPNOW-Transmitter/main/joystick.c
@@ -140,7 +140,7 @@ void wifi_init() {
 void rc_send_data_task()
 {
     while (true) {
-        if (esp_now_is_peer_exist(receiver_mac)) {
+        if (esp_now_is_peer_exist((uint8_t*)receiver_mac)) {
             sendData();
             //sendRawData(); 
         }