licence update

[supertux.git] / data / levels / world2 / trees.stl

diff --git a/data/levels/world2/trees.stl b/data/levels/world2/trees.stl
index 732f2e7..a3e2a31 100644 (file)
--- a/data/levels/world2/trees.stl
+++ b/data/levels/world2/trees.stl
@@ -2,6 +2,7 @@
   (version 2)
   (name (_ "Penguins don't grow on Trees"))
   (author "Wolfgang Becker")
+  (license "GPL 2 / CC-by-sa 3.0")
   (sector
     (name "main")
     (music "music/forest2.ogg")