diff --git a/plant-eyes/shaders/frtrans.frag.glsl b/plant-eyes/shaders/frtrans.frag.glsl
index 18030c8..62f5547 100644
--- a/plant-eyes/shaders/frtrans.frag.glsl
+++ b/plant-eyes/shaders/frtrans.frag.glsl
@@ -1,10 +1,4 @@
-// Copyright (C) 2007 Dave Griffiths
-// Licence: GPLv2 (see COPYING)
-// Fluxus Shader Library
-// ---------------------
-// Refract/reflect combined with facing ratio, and blinn specular
-// (written on a plane from Dresden to Munich)
-
+// simple facing ratio transparency shader
 
 varying vec3 V;
 varying vec3 N;
diff --git a/plant-eyes/shaders/frtrans.vert.glsl b/plant-eyes/shaders/frtrans.vert.glsl
index 8acda89..16aa220 100644
--- a/plant-eyes/shaders/frtrans.vert.glsl
+++ b/plant-eyes/shaders/frtrans.vert.glsl
@@ -1,9 +1,4 @@
-// Copyright (C) 2007 Dave Griffiths
-// Licence: GPLv2 (see COPYING)
-// Fluxus Shader Library
-// ---------------------
-// Refract/reflect combined with facing ratio, and blinn specular
-// (written on a plane from Dresden to Munich)
+// simple facing ratio transparency shader
 
 varying vec3 N;
 varying vec3 P;