diff --git a/cfgs/generic_rv64/arch_overlay/csr/marchid.yaml b/cfgs/generic_rv64/arch_overlay/csr/marchid.yaml
index 45284efba..4d531edde 100644
--- a/cfgs/generic_rv64/arch_overlay/csr/marchid.yaml
+++ b/cfgs/generic_rv64/arch_overlay/csr/marchid.yaml
@@ -3,4 +3,4 @@
 marchid:
   fields:
     Architecture:
-      reset_value: 0xcafebabe
+      description: Custom overlay description