diff --git a/NOTICE b/NOTICE
index df08109c3cde5503fedf6ceb00e7a29b21941a99..9a1cf93a048b7d9f6f0259a485c2fcb252e78660 100644
--- a/NOTICE
+++ b/NOTICE
@@ -1,6 +1,10 @@
 FOSS Galaxy Game Library
 Copyright 2021 Joseph Walton-Rivers
 
+The Initial Developer of some parts of the framework, which are copied from, derived from, or
+inspired by code provided via opengl-tutorial.org, is Sam Hocevar (sam@hocevar.net).
+Copyright (C) 2004 Sam Hocevar <sam@hocevar.net>. WTFPL.
+
 The Initial Developer of IMGUI (vendor/IMGUI),
 is Omar Cornut ( https://github.com/ocornut )
 Copyright (c) 2014-2021 Omar Cornut. MIT licence.