diff --git a/host_usb_mixer_control/OSX/libusb.h b/host_usb_mixer_control/OSX/libusb.h
index e5487bc7..11263803 100644
--- a/host_usb_mixer_control/OSX/libusb.h
+++ b/host_usb_mixer_control/OSX/libusb.h
@@ -1,22 +1,3 @@
-/**
- * Module:  host_usb_mixer_control
- * Version: 1v0
- * Build:   d94b0511afe40ece896637f88c6379f9b6f9f603
- * File:    libusb.h
- *
- * The copyrights, all other intellectual and industrial 
- * property rights are retained by XMOS and/or its licensors. 
- * Terms and conditions covering the use of this code can
- * be found in the Xmos End User License Agreement.
- *
- * Copyright XMOS Ltd 2010
- *
- * In the case where this code is a modification of existing code
- * under a separate license, the separate license terms are shown
- * below. The modifications to the code are still covered by the 
- * copyright notice above.
- *
- **/                                   
 /*
  * Public libusb header file
  * Copyright (C) 2007-2008 Daniel Drake <dsd@gentoo.org>
diff --git a/host_usb_mixer_control/OSX/usb_mixer.cpp b/host_usb_mixer_control/OSX/usb_mixer.cpp
index 236a1e69..b678a7ed 100644
--- a/host_usb_mixer_control/OSX/usb_mixer.cpp
+++ b/host_usb_mixer_control/OSX/usb_mixer.cpp
@@ -1,3 +1,5 @@
+// Copyright 2022-2023 XMOS LIMITED.
+// This Software is subject to the terms of the XMOS Public Licence: Version 1.
 #include <stdlib.h>
 #include <stdio.h>
 #include <string.h>
diff --git a/host_usb_mixer_control/Win32/global.h b/host_usb_mixer_control/Win32/global.h
index af46ab64..cec10f4d 100644
--- a/host_usb_mixer_control/Win32/global.h
+++ b/host_usb_mixer_control/Win32/global.h
@@ -1,22 +1,6 @@
-/**
- * Module:  host_usb_mixer_control
- * Version: 1v0
- * Build:   d94b0511afe40ece896637f88c6379f9b6f9f603
- * File:    global.h
- *
- * The copyrights, all other intellectual and industrial 
- * property rights are retained by XMOS and/or its licensors. 
- * Terms and conditions covering the use of this code can
- * be found in the Xmos End User License Agreement.
- *
- * Copyright XMOS Ltd 2010
- *
- * In the case where this code is a modification of existing code
- * under a separate license, the separate license terms are shown
- * below. The modifications to the code are still covered by the 
- * copyright notice above.
- *
- **/                                   
+// Copyright 2022-2023 XMOS LIMITED.
+// This Software is subject to the terms of the XMOS Public Licence: Version 1.
+                                
 /************************************************************************
  *
  *  Module:       global.h
diff --git a/host_usb_mixer_control/Win32/usb_mixer.cpp b/host_usb_mixer_control/Win32/usb_mixer.cpp
index 8284ac7c..08b0d406 100644
--- a/host_usb_mixer_control/Win32/usb_mixer.cpp
+++ b/host_usb_mixer_control/Win32/usb_mixer.cpp
@@ -1,3 +1,5 @@
+// Copyright 2022-2023 XMOS LIMITED.
+// This Software is subject to the terms of the XMOS Public Licence: Version 1.
 #include <stdlib.h>
 #include <stdio.h>
 #include <string.h>
diff --git a/host_usb_mixer_control/mixer_app.cpp b/host_usb_mixer_control/mixer_app.cpp
index 31de96b8..5736ae3e 100644
--- a/host_usb_mixer_control/mixer_app.cpp
+++ b/host_usb_mixer_control/mixer_app.cpp
@@ -1,3 +1,5 @@
+// Copyright 2022-2023 XMOS LIMITED.
+// This Software is subject to the terms of the XMOS Public Licence: Version 1.
 #include <stdlib.h>
 #include <stdio.h>
 #include <string.h>
diff --git a/host_usb_mixer_control/usb_mixer.h b/host_usb_mixer_control/usb_mixer.h
index c7da062d..3749a8a8 100644
--- a/host_usb_mixer_control/usb_mixer.h
+++ b/host_usb_mixer_control/usb_mixer.h
@@ -1,22 +1,6 @@
-/**
- * Module:  host_usb_mixer_control
- * Version: 1v0
- * Build:   c9de4042d132c4eddebaa352f91fb98ef883e272
- * File:    usb_mixer.h
- *
- * The copyrights, all other intellectual and industrial 
- * property rights are retained by XMOS and/or its licensors. 
- * Terms and conditions covering the use of this code can
- * be found in the Xmos End User License Agreement.
- *
- * Copyright XMOS Ltd 2010
- *
- * In the case where this code is a modification of existing code
- * under a separate license, the separate license terms are shown
- * below. The modifications to the code are still covered by the 
- * copyright notice above.
- *
- **/                                   
+// Copyright 2022-2023 XMOS LIMITED.
+// This Software is subject to the terms of the XMOS Public Licence: Version 1.
+                              
 #define USB_MIXER_SUCCESS 0
 #define USB_MIXER_FAILURE -1