diff --git a/pkgs/unstable-2d/LICENSE.txt b/pkgs/unstable-2d/LICENSE.txt
index 125f6a1..be1eb8e 100644
--- a/pkgs/unstable-2d/LICENSE.txt
+++ b/pkgs/unstable-2d/LICENSE.txt
@@ -7,4 +7,5 @@ applications, provided you follow the rules stated in the LGPL.  You
 can also modify this package; if you distribute a modified version,
 you must distribute it under the terms of the LGPL, which in
 particular means that you must release the source code for the
-modified software.  See COPYING_LESSER.txt for more information.
+modified software.  See http://www.gnu.org/copyleft/lesser.html
+for more information.