diff --git a/examples/peripherals/usb/host/cdc/common/cdc_acm_host/test/test_cdc_acm_host.c b/examples/peripherals/usb/host/cdc/common/cdc_acm_host/test/test_cdc_acm_host.c
index 9d2582c..a340ac8 100644
--- a/examples/peripherals/usb/host/cdc/common/cdc_acm_host/test/test_cdc_acm_host.c
+++ b/examples/peripherals/usb/host/cdc/common/cdc_acm_host/test/test_cdc_acm_host.c
@@ -1,7 +1,7 @@
 /*
  * SPDX-FileCopyrightText: 2015-2022 Espressif Systems (Shanghai) CO LTD
  *
- * SPDX-License-Identifier: Apache-2.0
+ * SPDX-License-Identifier: CC0-1.0
  */
 
 #include "soc/soc_caps.h"
@@ -88,7 +88,7 @@ void usb_lib_task(void *arg)
 void test_install_cdc_driver(void)
 {
     // Create a task that will handle USB library events
-    TEST_ASSERT_EQUAL(pdTRUE, xTaskCreate(usb_lib_task, "usb_lib", 4*4096, xTaskGetCurrentTaskHandle(), 10, NULL));
+    TEST_ASSERT_EQUAL(pdTRUE, xTaskCreatePinnedToCore(usb_lib_task, "usb_lib", 4*4096, xTaskGetCurrentTaskHandle(), 10, NULL, 0));
     ulTaskNotifyTake(false, 1000);
 
     printf("Installing CDC-ACM driver\n");
diff --git a/examples/peripherals/usb/host/cdc/common/cdc_acm_host/test/usb_device.c b/examples/peripherals/usb/host/cdc/common/cdc_acm_host/test/usb_device.c
index a271411..d6605eb 100644
--- a/examples/peripherals/usb/host/cdc/common/cdc_acm_host/test/usb_device.c
+++ b/examples/peripherals/usb/host/cdc/common/cdc_acm_host/test/usb_device.c
@@ -1,7 +1,7 @@
 /*
  * SPDX-FileCopyrightText: 2015-2022 Espressif Systems (Shanghai) CO LTD
  *
- * SPDX-License-Identifier: Apache-2.0
+ * SPDX-License-Identifier: CC0-1.0
  */
 
 #include <stdint.h>
@@ -55,7 +55,7 @@ void run_usb_dual_cdc_device(void)
         .usb_dev = TINYUSB_USBDEV_0,
         .cdc_port = TINYUSB_CDC_ACM_0,
         .rx_unread_buf_sz = 64,
-        .callback_rx = &tinyusb_cdc_rx_callback, // the first way to register a callback
+        .callback_rx = &tinyusb_cdc_rx_callback,
         .callback_rx_wanted_char = NULL,
         .callback_line_state_changed = NULL,
         .callback_line_coding_changed = NULL