diff --git a/ESP-IDF_Robot_RC/main/espnow_example_main.c b/ESP-IDF_Robot_RC/main/espnow_example_main.c
index 372c4dd12..f050fd419 100755
--- a/ESP-IDF_Robot_RC/main/espnow_example_main.c
+++ b/ESP-IDF_Robot_RC/main/espnow_example_main.c
@@ -486,7 +486,7 @@ static void rc_send_data_task2 (void *pvParameter) {
 
     while (true) {
         //memcpy(send_packet->dest_mac, receiver_mac, ESP_NOW_ETH_ALEN);
-        esp_err_t r = esp_now_send(receiver_mac, send_packet->buffer, sizeof(buffer));//send_packet->len);
+        esp_err_t r = esp_now_send(receiver_mac, send_packet->buffer, sizeof(sensors_data_t));//send_packet->len);
         //esp_now_send(send_packet->dest_mac, send_packet->buffer, send_packet->len);
 
         if (r != ESP_OK) {