diff --git a/audio/waon/waon.SlackBuild b/audio/waon/waon.SlackBuild
index 09577e782c..2781231ce4 100644
--- a/audio/waon/waon.SlackBuild
+++ b/audio/waon/waon.SlackBuild
@@ -4,6 +4,8 @@
 
 # Written by B. Watson (yalhcru@gmail.com)
 
+# Licensed under the WTFPL. See http://www.wtfpl.net/txt/copying/ for details.
+
 PRGNAM=waon
 VERSION=${VERSION:-0.9}
 BUILD=${BUILD:-1}