diff --git a/README.md b/README.md
index af00f30..9da5dc2 100644
--- a/README.md
+++ b/README.md
@@ -33,7 +33,8 @@ check [the pictures](doc/pictures.md) in the doc directory
 
 ## License
 
-[GNU AFFERO GENERAL PUBLIC LICENSE Version 3](https://www.gnu.org/licenses/agpl-3.0.en.html)
+CC0 1.0 Universal
+A copy of the license is in the LICENSE file
 
 ## User guide