diff --git a/nix/buildLisp/default.nix b/nix/buildLisp/default.nix
index 1dae0efeb..c44e84189 100644
--- a/nix/buildLisp/default.nix
+++ b/nix/buildLisp/default.nix
@@ -143,7 +143,7 @@ let
         let
           implementation = old.implementation or defaultImplementation;
           brokenOn = old.brokenOn or [];
-          targets = lib.subtractLists brokenOn
+          targets = lib.subtractLists (brokenOn ++ [ implementation.name ])
             (builtins.attrNames impls);
         in {
           passthru = (old.passthru or {}) // {