diff --git a/ESP-IDF_Robot/main/mqtt.c b/ESP-IDF_Robot/main/mqtt.c
index b14bc6602..5af190c83 100644
--- a/ESP-IDF_Robot/main/mqtt.c
+++ b/ESP-IDF_Robot/main/mqtt.c
@@ -20,9 +20,11 @@ static void mqtt_publish_task(void *arg) {
         //float tsens_value = 0.0f;
         //temperature_sensor_get_celsius(temp_sensor, &tsens_value);
         ESP_LOGW("ESP32-C3", "Temperature value %.02f ℃", tsens_value);
+        char temp_str[6];
+        snprintf(temp_str, sizeof(temp_str), "%.02f", tsens_value);
 
         // Publish a message every 5 seconds
-        esp_mqtt_client_publish(mqtt_client, "/bitrider/temp", (char)tsens_value, 0, 1, 0);
+        esp_mqtt_client_publish(mqtt_client, "/bitrider/temp", temp_str, 0, 1, 0);
         vTaskDelay(pdMS_TO_TICKS(1000));
         ESP_LOGI(MQTT_TAG, "Called task to publish topic /bitrider/temp");
     }