diff --git a/examples/get-started/hello_world/main/hello_world_main.c b/examples/get-started/hello_world/main/hello_world_main.c
index 63d5665b8e..0625d2bfde 100644
--- a/examples/get-started/hello_world/main/hello_world_main.c
+++ b/examples/get-started/hello_world/main/hello_world_main.c
@@ -1,11 +1,9 @@
-/* Hello World Example
+/*
+ * SPDX-FileCopyrightText: 2010-2022 Espressif Systems (Shanghai) CO LTD
+ *
+ * SPDX-License-Identifier: CC0-1.0
+ */
 
-   This example code is in the Public Domain (or CC0 licensed, at your option.)
-
-   Unless required by applicable law or agreed to in writing, this
-   software is distributed on an "AS IS" BASIS, WITHOUT WARRANTIES OR
-   CONDITIONS OF ANY KIND, either express or implied.
-*/
 #include <stdio.h>
 #include "sdkconfig.h"
 #include "freertos/FreeRTOS.h"
@@ -21,15 +19,15 @@ void app_main(void)
     esp_chip_info_t chip_info;
     esp_chip_info(&chip_info);
     printf("This is %s chip with %d CPU core(s), WiFi%s%s, ",
-            CONFIG_IDF_TARGET,
-            chip_info.cores,
-            (chip_info.features & CHIP_FEATURE_BT) ? "/BT" : "",
-            (chip_info.features & CHIP_FEATURE_BLE) ? "/BLE" : "");
+           CONFIG_IDF_TARGET,
+           chip_info.cores,
+           (chip_info.features & CHIP_FEATURE_BT) ? "/BT" : "",
+           (chip_info.features & CHIP_FEATURE_BLE) ? "/BLE" : "");
 
     printf("silicon revision %d, ", chip_info.revision);
 
-    printf("%dMB %s flash\n", spi_flash_get_chip_size() / (1024 * 1024),
-            (chip_info.features & CHIP_FEATURE_EMB_FLASH) ? "embedded" : "external");
+    printf("%uMB %s flash\n", spi_flash_get_chip_size() / (1024 * 1024),
+           (chip_info.features & CHIP_FEATURE_EMB_FLASH) ? "embedded" : "external");
 
     printf("Minimum free heap size: %d bytes\n", esp_get_minimum_free_heap_size());
 
diff --git a/tools/ci/check_copyright_ignore.txt b/tools/ci/check_copyright_ignore.txt
index 567d377c55..503b151c4b 100644
--- a/tools/ci/check_copyright_ignore.txt
+++ b/tools/ci/check_copyright_ignore.txt
@@ -2031,7 +2031,6 @@ examples/ethernet/iperf/main/ethernet_example_main.c
 examples/get-started/blink/example_test.py
 examples/get-started/blink/main/blink_example_main.c
 examples/get-started/hello_world/example_test.py
-examples/get-started/hello_world/main/hello_world_main.c
 examples/get-started/sample_project/main/main.c
 examples/mesh/internal_communication/main/include/mesh_light.h
 examples/mesh/internal_communication/main/mesh_light.c