diff --git a/README.md b/README.md
index 5536728..4109509 100644
--- a/README.md
+++ b/README.md
@@ -31,7 +31,7 @@ implements its contract, and no holder's code lives here.
 
 Every file under `go/` and `ts/` outside `go/clients/` is written by the generator (seatgen, the source of the Go and
 Node build modules' generate step) and compared on every build: a hand-written file there fails, named (ADR 0625 §5).
-`seatgen -check` also runs the client check (each client is for a seat defined whole, a module of its own, importing
+`seatgen -check` (mesh-catalog `modules/mesh-build-go/buildstep/cmd/seatgen`) also runs the client check (each client is for a seat defined whole, a module of its own, importing
 only its seat's contract and mesh-sdk) and checks `module.json`'s Go and npm package artifacts against the tree.
 
 Made by the mesh from the gitea module's config value `repositories` (novox/hq ADR 0428). Main takes no push: a change reaches it by a pull request whose `mesh/check` passed: the checker's verdict on its head merged onto main, its tests run by their language's convention (novox/hq ADR 0447, ADR 0445).