diff --git a/fphw.cls b/fphw.cls
index 5835400..88bf1b6 100644
--- a/fphw.cls
+++ b/fphw.cls
@@ -3,6 +3,9 @@
 % Maintainer: Felipe Portales-Oliva (f.portales.oliva@gmail.com)
 % 
 % Document class to produce simple yet stylish homework submissions 
+%
+% This package is public domain, according to :
+%    The Unlicense <https://unlicense.org>
 %%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
 
 %%% Identification