diff --git a/README.md b/README.md
index aa8850b..7e74590 100644
--- a/README.md
+++ b/README.md
@@ -4,3 +4,5 @@ Use the hammer to make stairs and ladders in stone. Great for mining!
 
 Check it out on the forum
 https://forum.minetest.net/viewtopic.php?f=9&t=13484&p=196293#p196293
+
+Licence - WTFPL