diff --git a/bank.lua b/bank.lua
index 73029c4..f608932 100644
--- a/bank.lua
+++ b/bank.lua
@@ -1,6 +1,6 @@
 
 
--- Copyright (C) 2021 2022 GNU Hacker
+-- Copyright (C) 2021, 2022 GNU Hacker
 
 -- This file is part of Emeraldbank Minetest Mod.
 
diff --git a/commands.lua b/commands.lua
index 0842497..2d455b1 100644
--- a/commands.lua
+++ b/commands.lua
@@ -1,6 +1,6 @@
 
 
--- Copyright (C) 2021 2022 GNU Hacker
+-- Copyright (C) 2021, 2022 GNU Hacker
 
 -- This file is part of Emeraldbank Minetest Mod.
 
diff --git a/income.lua b/income.lua
index 3bbacb6..ba6b907 100644
--- a/income.lua
+++ b/income.lua
@@ -1,6 +1,6 @@
 
 
--- Copyright (C) 2021 2022 GNU Hacker
+-- Copyright (C) 2021, 2022 GNU Hacker
 
 -- This file is part of Emeraldbank Minetest Mod.
 
diff --git a/init.lua b/init.lua
index 306d01c..4e75c55 100644
--- a/init.lua
+++ b/init.lua
@@ -1,6 +1,6 @@
 
 
--- Copyright (C) 2021 2022 GNU Hacker
+-- Copyright (C) 2021, 2022 GNU Hacker
 
 -- This file is part of Emeraldbank Minetest Mod.
 
diff --git a/shop.lua b/shop.lua
index a874077..d23a68d 100644
--- a/shop.lua
+++ b/shop.lua
@@ -1,6 +1,6 @@
 
 
--- Copyright (C) 2021 2022 GNU Hacker
+-- Copyright (C) 2021, 2022 GNU Hacker
 
 -- This file is part of Emeraldbank Minetest Mod.