diff --git a/test.tex b/test.tex
index 16a3f4f950a3c30eca56c01b8af1e25ad8d39294..34056c135a807945170b82dd2212c67121333f78 100644
--- a/test.tex
+++ b/test.tex
@@ -1,3 +1,5 @@
+% demo file, not complex enough for copyright
+
 \documentclass{article}%
 
 \usepackage[utf8]{inputenc}%
diff --git a/unicodedomino.sty b/unicodedomino.sty
index d66d7e048653b5cf63bf1f7f221fcb186e1c0561..14678689ec5d8df284aaed41bb3be1b5c69d26f8 100644
--- a/unicodedomino.sty
+++ b/unicodedomino.sty
@@ -2,7 +2,7 @@
 %-
 % Copyright © 2018
 %	mirabilos <m@mirbsd.org>
-% Copyright © 2017
+% Copyright © 2017, 2018
 %	mirabilos <t.glaser@tarent.de>
 % with contributions via chat by (among others)
 %	David Carlisle <http://tex.stackexchange.com/users/1090>
diff --git a/unicodedomino_compat.def b/unicodedomino_compat.def
index 12e62ef939891c5f164098fd38f860d7c8c27909..59038af3db265ed375fd887647b9ab6b44e92cc3 100644
--- a/unicodedomino_compat.def
+++ b/unicodedomino_compat.def
@@ -1,22 +1,7 @@
 % -*- mode: tex -*-
 %-
-% Copyright © 2018
-%	mirabilos <m@mirbsd.org>
-%
-% Provided that these terms and disclaimer and all copyright notices
-% are retained or reproduced in an accompanying document, permission
-% is granted to deal in this work without restriction, including un‐
-% limited rights to use, publicly perform, distribute, sell, modify,
-% merge, give away, or sublicence.
-%
-% This work is provided “AS IS” and WITHOUT WARRANTY of any kind, to
-% the utmost extent permitted by applicable law, neither express nor
-% implied; without malicious intent or gross negligence. In no event
-% may a licensor, author or contributor be held liable for indirect,
-% direct, other damage, loss, or other issues arising in any way out
-% of dealing in the work, even if advised of the possibility of such
-% damage or existence of a defect, except proven that it results out
-% of said person’s immediate fault when using the work as intended.
+% See unicodedomino.sty for copyright and licence terms. Furthermore
+% this file is dual-licenced under the LPPL version 1.3c or later.
 %-
 % Compatibility code with older utf8.def versions
 
diff --git a/unicodedomino_kernel_better_decode.def b/unicodedomino_kernel_better_decode.def
index aa0a72323275cf614d97700591fe9e03aadc8bae..90d64147fb2d3df8ca538ffd201c3030c580f4a9 100644
--- a/unicodedomino_kernel_better_decode.def
+++ b/unicodedomino_kernel_better_decode.def
@@ -1,24 +1,7 @@
 % -*- mode: tex -*-
 %-
-% Copyright © 2018
-%	mirabilos <t.glaser@tarent.de>
-%
-% Provided that these terms and disclaimer and all copyright notices
-% are retained or reproduced in an accompanying document, permission
-% is granted to deal in this work without restriction, including un‐
-% limited rights to use, publicly perform, distribute, sell, modify,
-% merge, give away, or sublicence.
-%
-% This work is provided “AS IS” and WITHOUT WARRANTY of any kind, to
-% the utmost extent permitted by applicable law, neither express nor
-% implied; without malicious intent or gross negligence. In no event
-% may a licensor, author or contributor be held liable for indirect,
-% direct, other damage, loss, or other issues arising in any way out
-% of dealing in the work, even if advised of the possibility of such
-% damage or existence of a defect, except proven that it results out
-% of said person’s immediate fault when using the work as intended.
-%
-% This file is dual-licenced under the LPPL version 1.3c or later.
+% See unicodedomino.sty for copyright and licence terms. Furthermore
+% this file is dual-licenced under the LPPL version 1.3c or later.
 %-
 % Improved Unicode decoding using the fixed-up checkseq code.
 
diff --git a/unicodedomino_kernel_cosmetics.def b/unicodedomino_kernel_cosmetics.def
index 23de9eee4e0dd8684de007cf9d3757c212ee7bc5..0ed6bdd025c82645bbb1a9ef244eb7e8d4c55abb 100644
--- a/unicodedomino_kernel_cosmetics.def
+++ b/unicodedomino_kernel_cosmetics.def
@@ -1,24 +1,7 @@
 % -*- mode: tex -*-
 %-
-% Copyright © 2017, 2018
-%	mirabilos <m@mirbsd.org>
-%
-% Provided that these terms and disclaimer and all copyright notices
-% are retained or reproduced in an accompanying document, permission
-% is granted to deal in this work without restriction, including un‐
-% limited rights to use, publicly perform, distribute, sell, modify,
-% merge, give away, or sublicence.
-%
-% This work is provided “AS IS” and WITHOUT WARRANTY of any kind, to
-% the utmost extent permitted by applicable law, neither express nor
-% implied; without malicious intent or gross negligence. In no event
-% may a licensor, author or contributor be held liable for indirect,
-% direct, other damage, loss, or other issues arising in any way out
-% of dealing in the work, even if advised of the possibility of such
-% damage or existence of a defect, except proven that it results out
-% of said person’s immediate fault when using the work as intended.
-%
-% This file is dual-licenced under the LPPL version 1.3c or later.
+% See unicodedomino.sty for copyright and licence terms. Furthermore
+% this file is dual-licenced under the LPPL version 1.3c or later.
 %-
 % Improve error and warning formatting. Fully submitted upstream.
 
diff --git a/unicodedomino_kernel_fixup_f4_and_checkseq.def b/unicodedomino_kernel_fixup_f4_and_checkseq.def
index 545deae4d197bd3378961af7f87cff78fca662c4..b8833ffc2400f4c1b19493ba2e7d45a367057525 100644
--- a/unicodedomino_kernel_fixup_f4_and_checkseq.def
+++ b/unicodedomino_kernel_fixup_f4_and_checkseq.def
@@ -1,24 +1,7 @@
 % -*- mode: tex -*-
 %-
-% Copyright © 2018
-%	mirabilos <m@mirbsd.org>
-%
-% Provided that these terms and disclaimer and all copyright notices
-% are retained or reproduced in an accompanying document, permission
-% is granted to deal in this work without restriction, including un‐
-% limited rights to use, publicly perform, distribute, sell, modify,
-% merge, give away, or sublicence.
-%
-% This work is provided “AS IS” and WITHOUT WARRANTY of any kind, to
-% the utmost extent permitted by applicable law, neither express nor
-% implied; without malicious intent or gross negligence. In no event
-% may a licensor, author or contributor be held liable for indirect,
-% direct, other damage, loss, or other issues arising in any way out
-% of dealing in the work, even if advised of the possibility of such
-% damage or existence of a defect, except proven that it results out
-% of said person’s immediate fault when using the work as intended.
-%
-% This file is dual-licenced under the LPPL version 1.3c or later.
+% See unicodedomino.sty for copyright and licence terms. Furthermore
+% this file is dual-licenced under the LPPL version 1.3c or later.
 %-
 % Fix check for illegal sequences to fail overlong encoded sequences
 % as well as codepoints outside of the Unicode range [0;10FFFF]. Add