diff --git a/hw/usb_interface/ch552_fw/encode_usb_strings.py b/hw/usb_interface/ch552_fw/encode_usb_strings.py
index 2eba2cf..cc263e7 100755
--- a/hw/usb_interface/ch552_fw/encode_usb_strings.py
+++ b/hw/usb_interface/ch552_fw/encode_usb_strings.py
@@ -51,7 +51,7 @@ def format_descriptor(name, value):
 
 if __name__ == "__main__":
     strings = {
-        "ProdDesc": "MTA1-USB-V1",
+        "ProdDesc": "Tillitis TKEY-USB-V2",
         "ManufDesc": "Tillitis",
         "SerialDesc": "68de5d27-e223-4874-bc76-a54d6e84068f",
         "CdcCtrlInterfaceDesc": "CDC-Ctrl",
@@ -62,6 +62,9 @@ if __name__ == "__main__":
     }
 
     with open('inc/usb_strings.h', 'w') as f:
+        f.write('// SPDX-FileCopyrightText: 2024 Tillitis AB <tillitis.se>\n')
+        f.write('// SPDX-License-Identifier: MIT\n')
+        f.write('\n')
         f.write('#ifndef __USB_STRINGS_H__\n')
         f.write('#define __USB_STRINGS_H__\n')
         f.write('\n')
diff --git a/hw/usb_interface/ch552_fw/inc/usb_strings.h b/hw/usb_interface/ch552_fw/inc/usb_strings.h
index 9927f02..d697d4b 100644
--- a/hw/usb_interface/ch552_fw/inc/usb_strings.h
+++ b/hw/usb_interface/ch552_fw/inc/usb_strings.h
@@ -6,12 +6,14 @@
 
 #include "mem.h"
 
-unsigned char FLASH ProdDesc[] = {  // "MTA1-USB-V1"
-    24,    // Length of this descriptor (in bytes)
+unsigned char FLASH ProdDesc[] = {  // "Tillitis TKEY-USB-V2"
+    42,    // Length of this descriptor (in bytes)
     0x03,  // Descriptor type (String)
-    'M', 0, 'T', 0, 'A', 0, '1', 0,
-    '-', 0, 'U', 0, 'S', 0, 'B', 0,
-    '-', 0, 'V', 0, '1', 0,
+    'T', 0, 'i', 0, 'l', 0, 'l', 0,
+    'i', 0, 't', 0, 'i', 0, 's', 0,
+    ' ', 0, 'T', 0, 'K', 0, 'E', 0,
+    'Y', 0, '-', 0, 'U', 0, 'S', 0,
+    'B', 0, '-', 0, 'V', 0, '2', 0,
 };
 
 unsigned char FLASH ManufDesc[] = {  // "Tillitis"