diff --git a/ESP-IDF_Robot/main/blink_example_main.c b/ESP-IDF_Robot/main/blink_example_main.c
index eb1cfe19c..a46ae6c86 100644
--- a/ESP-IDF_Robot/main/blink_example_main.c
+++ b/ESP-IDF_Robot/main/blink_example_main.c
@@ -740,8 +740,8 @@ static void motors_task (void *pvParameter) {}
     EXP32-C3 Chip built-in temprature sensor
 */
 static void chip_sensor_init () {
-    temperature_sensor_handle_t temp_sensor = NULL;
-    temperature_sensor_config_t temp_sensor_config = TEMPERATURE_SENSOR_CONFIG_DEFAULT(10, 50);
+    temp_sensor = NULL;
+    temp_sensor_config = TEMPERATURE_SENSOR_CONFIG_DEFAULT(10, 50);
     ESP_ERROR_CHECK(temperature_sensor_install(&temp_sensor_config, &temp_sensor));
 
     ESP_LOGI(TAG, "Enable temperature sensor");