diff --git a/aliases.lua b/aliases.lua
index 8742f44..f374915 100644
--- a/aliases.lua
+++ b/aliases.lua
@@ -1,4 +1,11 @@
--- Aliases
+--[[
+======================================================================
+This file is part of Map Tools.
+
+Copyright (c) 2012-2015 Calinou and contributors.
+Licensed under the zlib license. See LICENSE.md for more information.
+======================================================================
+--]]
 
 minetest.register_alias("adminpick", "maptools:pick_admin")
 minetest.register_alias("adminpickaxe", "maptools:pick_admin")
@@ -69,8 +76,6 @@ minetest.register_alias("fake_fire", "maptools:fake_fire")
 minetest.register_alias("ffire", "maptools:fake_fire")
 minetest.register_alias("igniter", "maptools:igniter")
 
--- Unbreakable block aliases
-
 minetest.register_alias("stone_u", "maptools:stone")
 minetest.register_alias("tree_u", "maptools:tree")
 minetest.register_alias("cobble_u", "maptools:cobble")
diff --git a/config.lua b/config.lua
index 626441e..9472684 100644
--- a/config.lua
+++ b/config.lua
@@ -1,3 +1,12 @@
+--[[
+======================================================================
+This file is part of Map Tools.
+
+Copyright (c) 2012-2015 Calinou and contributors.
+Licensed under the zlib license. See LICENSE.md for more information.
+======================================================================
+--]]
+
 maptools.config = {}
 
 local function getbool_default(setting, default)
diff --git a/craftitems.lua b/craftitems.lua
index 444c0f0..27c36ba 100644
--- a/craftitems.lua
+++ b/craftitems.lua
@@ -1,3 +1,12 @@
+--[[
+======================================================================
+This file is part of Map Tools.
+
+Copyright (c) 2012-2015 Calinou and contributors.
+Licensed under the zlib license. See LICENSE.md for more information.
+======================================================================
+--]]
+
 local S = maptools.intllib
 
 maptools.creative = maptools.config["hide_from_creative_inventory"]
diff --git a/default_nodes.lua b/default_nodes.lua
index 5f3a549..e83fdd2 100644
--- a/default_nodes.lua
+++ b/default_nodes.lua
@@ -1,3 +1,12 @@
+--[[
+======================================================================
+This file is part of Map Tools.
+
+Copyright (c) 2012-2015 Calinou and contributors.
+Licensed under the zlib license. See LICENSE.md for more information.
+======================================================================
+--]]
+
 local S = maptools.intllib
 
 maptools.creative = maptools.config["hide_from_creative_inventory"]
diff --git a/init.lua b/init.lua
index fde2d9d..1ddafd2 100644
--- a/init.lua
+++ b/init.lua
@@ -4,7 +4,7 @@
 By Calinou.
 
 Copyright (c) 2012-2014 Calinou and contributors.
-Licensed under the zlib license. See LICENSE.txt for more information.
+Licensed under the zlib license. See LICENSE.md for more information.
 ======================================================================
 --]]
 
diff --git a/nodes.lua b/nodes.lua
index dbd3995..dee9066 100644
--- a/nodes.lua
+++ b/nodes.lua
@@ -1,3 +1,12 @@
+--[[
+======================================================================
+This file is part of Map Tools.
+
+Copyright (c) 2012-2015 Calinou and contributors.
+Licensed under the zlib license. See LICENSE.md for more information.
+======================================================================
+--]]
+
 local S = maptools.intllib
 
 maptools.creative = maptools.config["hide_from_creative_inventory"]
diff --git a/tools.lua b/tools.lua
index f3a8973..bbf3a08 100644
--- a/tools.lua
+++ b/tools.lua
@@ -1,3 +1,12 @@
+--[[
+======================================================================
+This file is part of Map Tools.
+
+Copyright (c) 2012-2015 Calinou and contributors.
+Licensed under the zlib license. See LICENSE.md for more information.
+======================================================================
+--]]
+
 local S = maptools.intllib
 
 maptools.creative = maptools.config["hide_from_creative_inventory"]