diff --git a/pkgs/by-name/ja/jade/package.nix b/pkgs/by-name/ja/jade/package.nix
index 372c559361b2..45d648192f7a 100644
--- a/pkgs/by-name/ja/jade/package.nix
+++ b/pkgs/by-name/ja/jade/package.nix
@@ -41,7 +41,7 @@ stdenv.mkDerivation rec {
 
   meta = {
     description = "James Clark's DSSSL Engine";
-    license = "custom";
+    license = lib.licenses.x11;
     homepage = "http://www.jclark.com/jade/";
     platforms = with lib.platforms; linux;
     maintainers = [ ];