diff --git a/nix/module-eval/bao-controller.nix b/nix/module-eval/bao-controller.nix
index f7bf14eb..3dde1073 100644
--- a/nix/module-eval/bao-controller.nix
+++ b/nix/module-eval/bao-controller.nix
@@ -46,9 +46,9 @@ let
   controllerNoStore = hive { deploy.swarm-controller.enable = true; };
 
   # A deployment that pinned `gatewayHost` away from its own swarm-domain
-  # default (`hive-matrix.nix`'s own doc: "a deployment that was running
-  # before this moved keeps its current name by pinning ... here"). Only
-  # this fixture can tell "the controller reads gatewayHost" apart from
+  # default (`hive-matrix-service.nix`'s own doc: "a deployment that was
+  # running before this moved keeps its current name by pinning ... here").
+  # Only this fixture can tell "the controller reads gatewayHost" apart from
   # "the controller re-derives gatewayHost's default itself" — both render
   # the same URL on every other fixture in this file.
   controllerPinnedGateway = hive {