1 files changed, 1 insertions, 1 deletions
diff --git a/pkgs/games/btanks/default.nix b/pkgs/games/btanks/default.nix
index 085c7c4082cb..46f5b3d01830 100644
--- a/pkgs/games/btanks/default.nix
+++ b/pkgs/games/btanks/default.nix
@@ -22,6 +22,6 @@ stdenv.mkDerivation rec {
   meta = {
     homepage = http://sourceforge.net/projects/btanks/;
     description = "Fast 2d tank arcade game";
-    license = "GPLv2+";
+    license = stdenv.lib.licenses.gpl2Plus;
   };
 }