diff --git a/pkgs/by-name/xt/xtitle/package.nix b/pkgs/by-name/xt/xtitle/package.nix
index ec4e3867ad9a..de25b9ab7b2a 100644
--- a/pkgs/by-name/xt/xtitle/package.nix
+++ b/pkgs/by-name/xt/xtitle/package.nix
@@ -34,7 +34,7 @@ stdenv.mkDerivation rec {
     description = "Outputs X window titles";
     homepage = "https://github.com/baskerville/xtitle";
     maintainers = with maintainers; [ meisternu ];
-    license = "Custom";
+    license = lib.licenses.unlicense;
     platforms = platforms.linux;
     mainProgram = "xtitle";
   };