diff --git a/pkgs/top-level/perl-packages.nix b/pkgs/top-level/perl-packages.nix
index 56ecb6645fd..8ccb2b94408 100644
--- a/pkgs/top-level/perl-packages.nix
+++ b/pkgs/top-level/perl-packages.nix
@@ -8189,7 +8189,7 @@ let self = _self // overrides; _self = with self; {
     propagatedBuildInputs = [ LWP URI ];
     meta = {
       description = "Generate signed OAuth requests";
-      license = stdenv.lib.licenses.unknown;
+      license = "unknown";
     };
   };