diff --git a/pkgs/development/libraries/dclxvi/default.nix b/pkgs/development/libraries/dclxvi/default.nix
index 47f3794f5ad5..1f8f9a4e69cc 100644
--- a/pkgs/development/libraries/dclxvi/default.nix
+++ b/pkgs/development/libraries/dclxvi/default.nix
@@ -31,5 +31,6 @@ stdenv.mkDerivation {
     description = "Naehrig, Niederhagen and Schwabe's pairings code, massaged into a shared library";
     maintainers = with maintainers; [ wkennington ];
     platforms = platforms.x86_64;
+    license = licenses.publicDomain;
   };
 }