diff --git a/pkgs/by-name/li/libmpc/package.nix b/pkgs/by-name/li/libmpc/package.nix
index 4bfea7b7bd24..d29fcc4dc70b 100644
--- a/pkgs/by-name/li/libmpc/package.nix
+++ b/pkgs/by-name/li/libmpc/package.nix
@@ -35,6 +35,8 @@ stdenv.mkDerivation (finalAttrs: {
 
   doCheck = true; # not cross;
 
+  __structuredAttrs = true;
+
   meta = {
     description = "Library for multiprecision complex arithmetic with exact rounding";