diff --git a/tests/test_routes_design_systems.py b/tests/test_routes_design_systems.py
index eca7396..8ad2389 100644
--- a/tests/test_routes_design_systems.py
+++ b/tests/test_routes_design_systems.py
@@ -44,6 +44,11 @@ def test_every_endpoint_is_reachable_on_the_app():
     }
     assert rules == {
         "/api/design-systems",
+        # Static segment, declared before the <int:...> rule reads it — Quart's
+        # int converter will not match "starter-roles", so the two cannot
+        # collide. Worth stating: a static-vs-dynamic sibling on the same prefix
+        # is exactly where a silently-shadowed route hides.
+        "/api/design-systems/starter-roles",
         "/api/design-systems/<int:design_system_id>",
         "/api/design-systems/<int:design_system_id>/resolved",
         "/api/design-systems/<int:design_system_id>/stylesheet",