diff --git a/compatibility.lua b/compatibility.lua
index 31ef017..1c99d13 100644
--- a/compatibility.lua
+++ b/compatibility.lua
@@ -1,3 +1,19 @@
+-- IndustrialTest
+-- Copyright (C) 2023 mrkubax10
+
+-- This program is free software: you can redistribute it and/or modify
+-- it under the terms of the GNU General Public License as published by
+-- the Free Software Foundation, either version 3 of the License, or
+-- (at your option) any later version.
+
+-- This program is distributed in the hope that it will be useful,
+-- but WITHOUT ANY WARRANTY; without even the implied warranty of
+-- MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+-- GNU General Public License for more details.
+
+-- You should have received a copy of the GNU General Public License
+-- along with this program.  If not, see <http://www.gnu.org/licenses/>.
+
 local S=minetest.get_translator("industrialtest")
 
 local mtgAvailable=minetest.get_modpath("default")
diff --git a/init.lua b/init.lua
index ff9ef7b..a393185 100644
--- a/init.lua
+++ b/init.lua
@@ -1,3 +1,19 @@
+-- IndustrialTest
+-- Copyright (C) 2023 mrkubax10
+
+-- This program is free software: you can redistribute it and/or modify
+-- it under the terms of the GNU General Public License as published by
+-- the Free Software Foundation, either version 3 of the License, or
+-- (at your option) any later version.
+
+-- This program is distributed in the hope that it will be useful,
+-- but WITHOUT ANY WARRANTY; without even the implied warranty of
+-- MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+-- GNU General Public License for more details.
+
+-- You should have received a copy of the GNU General Public License
+-- along with this program.  If not, see <http://www.gnu.org/licenses/>.
+
 MODNAME="industrialtest"
 local modpath=minetest.get_modpath(MODNAME)