diff --git a/README.md b/README.md
index 5a78c2d..d29dfda 100644
--- a/README.md
+++ b/README.md
@@ -1,4 +1,7 @@
 # minetest-mod-staffbox
 Useful shared mailbox for staffs of the server  
 Based on https://github.com/bas080/inbox  
-* After installation, add names of users that should have access to mailbox into the table in init.lua
+* After installation, add names of users that should have access to mailbox into the table in `init.lua`
+
+### License of media (textures)
+* `staffbox.png`, `staffbox_tile.png`, `staffbox_top.png` - by Zemtzov7, License - CC-BY-SA 4.0