diff --git a/nix/module-eval.nix b/nix/module-eval.nix
index 1463606e..7e9dd190 100644
--- a/nix/module-eval.nix
+++ b/nix/module-eval.nix
@@ -110,10 +110,12 @@ let
   # The queue's callout identity, fourth split slice. `autoGenerateCallout` is
   # left FALSE on purpose: that is what makes the seed paths the thing deciding
   # `responderConfigured`, so the assertion below is about the seeds rather
-  # than about the auto-mint branch. All six old paths are defined, so
-  # dropping any single shim entry fails the eval, not just the arms read.
+  # than about the auto-mint branch. Every one of the seven old paths is
+  # defined — `enable` included, which is why it is spelled the old way here
+  # while the fixture below uses the new one — so dropping any single nats
+  # shim fails the eval, not just the arms read.
   natsOldPath = hive {
-    deploy.nats.enable = true;
+    swarm.nats.enable = true;
     swarm.nats.autoGenerateCallout = false;
     swarm.nats.calloutUserPublicKey = "UTESTUSERPUBKEYAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAA";
     swarm.nats.calloutIssuerPublicKey = "ATESTISSUERPUBKEYAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAA";