diff --git a/include/beast/websocket/detail/utf8_checker.hpp b/include/beast/websocket/detail/utf8_checker.hpp
index cbd9b70c..e8f3d7b5 100644
--- a/include/beast/websocket/detail/utf8_checker.hpp
+++ b/include/beast/websocket/detail/utf8_checker.hpp
@@ -18,51 +18,6 @@ namespace beast {
 namespace websocket {
 namespace detail {
 
-/*  This is a modified work.
-
-    Original version and license:
-        https://www.cl.cam.ac.uk/~mgk25/ucs/utf8_check.c
-    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. *
-
-    Additional changes:
-        Optimized for predominantly 7-bit content, 2016
-        https://github.com/uWebSockets/uWebSockets/blob/755bd362649c06abff102f18e273c5792c51c1a0/src/WebSocketProtocol.h#L198
-    Copyright (c) 2016 Alex Hultman and contributors
-
-    This software is provided 'as-is', without any express or implied
-    warranty. In no event will the authors be held liable for any damages
-    arising from the use of this software.
-
-    Permission is granted to anyone to use this software for any purpose,
-    including commercial applications, and to alter it and redistribute it
-    freely, subject to the following restrictions:
-
-    1. The origin of this software must not be misrepresented; you must not
-       claim that you wrote the original software. If you use this software
-       in a product, an acknowledgement in the product documentation would be
-       appreciated but is not required.
-    2. Altered source versions must be plainly marked as such, and must not be
-       misrepresented as being the original software.
-    3. This notice may not be removed or altered from any source distribution.
-*/
-
 /** A UTF8 validator.
 
     This validator can be used to check if a buffer containing UTF8 text is