diff --git a/pkgs/applications/video/mpv/scripts/convert.nix b/pkgs/applications/video/mpv/scripts/convert.nix
index 935740db2764..b7d6ea88fe16 100644
--- a/pkgs/applications/video/mpv/scripts/convert.nix
+++ b/pkgs/applications/video/mpv/scripts/convert.nix
@@ -30,14 +30,15 @@ stdenvNoCC.mkDerivation {
   '';
   passthru.scriptName = "convert_script.lua";
 
-  meta = {
+  meta = with lib; {
     description = "Convert parts of a video while you are watching it in mpv";
     homepage = "https://gist.github.com/Zehkul/25ea7ae77b30af959be0";
-    maintainers = [ lib.maintainers.Profpatsch ];
+    maintainers = [ maintainers.Profpatsch ];
     longDescription = ''
       When this script is loaded into mpv, you can hit Alt+W to mark the beginning
       and Alt+W again to mark the end of the clip. Then a settings window opens.
     '';
+    license = licenses.unfree;
   };
 }