diff --git a/config/role_registry.yaml b/config/role_registry.yaml
index 7e495d4..c916b4a 100644
--- a/config/role_registry.yaml
+++ b/config/role_registry.yaml
@@ -2,7 +2,7 @@ t1:
   default: agents/strategy/nexus-strategy.md
 
 t2:
-  backend:  agents/engineering/engineering-software-architect.md
+  backend:  agents/engineering/engineering-backend-architect.md
   frontend: agents/engineering/engineering-frontend-architect.md
   infra:    agents/engineering/engineering-devops-automator.md
   data:     agents/engineering/engineering-data-engineer.md