diff --git a/ports/nrf/usb/usb_msc_flash.c b/ports/nrf/usb/usb_msc_flash.c
index 2d0e9bec7f..f78c241455 100644
--- a/ports/nrf/usb/usb_msc_flash.c
+++ b/ports/nrf/usb/usb_msc_flash.c
@@ -1,38 +1,28 @@
-/**************************************************************************/
-/*!
-    @file     usb_msc_flash.c
-    @author   hathach (tinyusb.org)
-
-    @section LICENSE
-
-    Software License Agreement (BSD License)
-
-    Copyright (c) 2018, Adafruit Industries (adafruit.com)
-    All rights reserved.
-
-    Redistribution and use in source and binary forms, with or without
-    modification, are permitted provided that the following conditions are met:
-    1. Redistributions of source code must retain the above copyright
-    notice, this list of conditions and the following disclaimer.
-    2. Redistributions in binary form must reproduce the above copyright
-    notice, this list of conditions and the following disclaimer in the
-    documentation and/or other materials provided with the distribution.
-    3. Neither the name of the copyright holders nor the
-    names of its contributors may be used to endorse or promote products
-    derived from this software without specific prior written permission.
-
-    THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS ''AS IS'' AND ANY
-    EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED
-    WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE
-    DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT HOLDER BE LIABLE FOR ANY
-    DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES
-    (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES;
-    LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND
-    ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
-    (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS
-    SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
-*/
-/**************************************************************************/
+/*
+ * This file is part of the MicroPython project, http://micropython.org/
+ *
+ * The MIT License (MIT)
+ *
+ * Copyright (c) 2018 hathach for Adafruit Industries
+ *
+ * Permission is hereby granted, free of charge, to any person obtaining a copy
+ * of this software and associated documentation files (the "Software"), to deal
+ * in the Software without restriction, including without limitation the rights
+ * to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
+ * copies of the Software, and to permit persons to whom the Software is
+ * furnished to do so, subject to the following conditions:
+ *
+ * The above copyright notice and this permission notice shall be included in
+ * all copies or substantial portions of the Software.
+ *
+ * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
+ * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
+ * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
+ * AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
+ * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
+ * OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN
+ * THE SOFTWARE.
+ */
 
 #include "tusb.h"
 #include "internal_flash.h"
@@ -43,6 +33,8 @@
 #include "lib/oofatfs/ff.h"
 #include "py/mpstate.h"
 
+#include "supervisor/shared/autoreload.h"
+
 /*------------------------------------------------------------------*/
 /* MACRO TYPEDEF CONSTANT ENUM
  *------------------------------------------------------------------*/
@@ -56,8 +48,8 @@
 // Callback invoked when received an SCSI command not in built-in list below
 // - READ_CAPACITY10, READ_FORMAT_CAPACITY, INQUIRY, MODE_SENSE6, REQUEST_SENSE
 // - READ10 and WRITE10 has their own callbacks
-int32_t tud_msc_scsi_cb (uint8_t lun, uint8_t const scsi_cmd[16], void* buffer, uint16_t bufsize) {
-    void const* response = NULL;
+int32_t tud_msc_scsi_cb (uint8_t lun, const uint8_t scsi_cmd[16], void* buffer, uint16_t bufsize) {
+    const void* response = NULL;
     uint16_t resplen = 0;
 
     switch ( scsi_cmd[0] ) {
@@ -110,7 +102,7 @@ int32_t tud_msc_read10_cb (uint8_t lun, uint32_t lba, uint32_t offset, void* buf
     (void) lun;
     (void) offset;
 
-    uint32_t const block_count = bufsize / MSC_FLASH_BLOCK_SIZE;
+    const uint32_t block_count = bufsize / MSC_FLASH_BLOCK_SIZE;
 
     internal_flash_read_blocks(buffer, lba, block_count);
 
@@ -123,7 +115,7 @@ int32_t tud_msc_write10_cb (uint8_t lun, uint32_t lba, uint32_t offset, void* bu
     (void) lun;
     (void) offset;
 
-    uint32_t const block_count = bufsize / MSC_FLASH_BLOCK_SIZE;
+    const uint32_t block_count = bufsize / MSC_FLASH_BLOCK_SIZE;
 
     // bufsize <= CFG_TUD_MSC_BUFSIZE (4096)
     internal_flash_write_blocks(buffer, lba, block_count);
@@ -145,4 +137,7 @@ void tud_msc_write10_complete_cb (uint8_t lun) {
 
     // flush pending cache when write10 is complete
     internal_flash_flush();
+
+    // This write is complete, start the autoreload clock.
+    autoreload_start();
 }