diff --git a/pkgs/games/xjump/default.nix b/pkgs/games/xjump/default.nix
index 520b7ccdfb9b..29c89637c1dd 100644
--- a/pkgs/games/xjump/default.nix
+++ b/pkgs/games/xjump/default.nix
@@ -16,6 +16,7 @@ stdenv.mkDerivation rec {
 
   meta = with stdenv.lib; {
     description = "The falling tower game";
+    license = licenses.gpl2;
     maintainers = with maintainers; [ pmeunier ];
   };
 }