diff --git a/docs/plans/2026-05-28-lazy-browse-design.md b/docs/plans/2026-05-28-lazy-browse-design.md
index f3c3baa..46fb46b 100644
--- a/docs/plans/2026-05-28-lazy-browse-design.md
+++ b/docs/plans/2026-05-28-lazy-browse-design.md
@@ -226,7 +226,7 @@ Unit tests (no live MXAccess / Galaxy required):
   - Ordering matches `DashboardBrowseTreeBuilder` byte-for-byte.
   - Sibling pagination across multiple pages.
   - Page-token round trip (serialize → deserialize → same offset).
-  - Stale `page_token` → `FailedPrecondition`.
+  - Stale `page_token` → `InvalidArgument`.
   - Unknown parent → `NotFound`.
   - Filter change between pages of the same token → `InvalidArgument`.
 - `GalaxyRepositoryGrpcServiceTests` — new `BrowseChildren` happy path,