diff --git a/pkgs/tools/misc/unclutter/default.nix b/pkgs/tools/misc/unclutter/default.nix
index a8468f8387f..84546985f72 100644
--- a/pkgs/tools/misc/unclutter/default.nix
+++ b/pkgs/tools/misc/unclutter/default.nix
@@ -32,5 +32,6 @@ stdenv.mkDerivation {
     '';
     maintainers = with maintainers; [ domenkozar ];
     platforms = platforms.unix;
+    license = stdenv.lib.licenses.publicDomain;
   };
 }