diff --git a/audio/jack-keyboard/jack-keyboard.SlackBuild b/audio/jack-keyboard/jack-keyboard.SlackBuild
index bb46a1e122..8180756301 100644
--- a/audio/jack-keyboard/jack-keyboard.SlackBuild
+++ b/audio/jack-keyboard/jack-keyboard.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=jack-keyboard
 VERSION=${VERSION:-2.5}
 BUILD=${BUILD:-1}