diff --git a/pkgs/top-level/pkg-config/test-defaultPkgConfigPackages.nix b/pkgs/top-level/pkg-config/test-defaultPkgConfigPackages.nix
index 1e53a02ec8a9..37687117987d 100644
--- a/pkgs/top-level/pkg-config/test-defaultPkgConfigPackages.nix
+++ b/pkgs/top-level/pkg-config/test-defaultPkgConfigPackages.nix
@@ -42,4 +42,4 @@ let
     else testers.hasPkgConfigModule { inherit moduleName; package = pkg; };
 
 in
-  allTests // { inherit tests-combined; }
+  lib.recurseIntoAttrs allTests // { inherit tests-combined; }