diff --git a/src/mem/ruby/protocol/chi/CHI-cache-actions.sm b/src/mem/ruby/protocol/chi/CHI-cache-actions.sm
index 83698bb321..42e07eb46b 100644
--- a/src/mem/ruby/protocol/chi/CHI-cache-actions.sm
+++ b/src/mem/ruby/protocol/chi/CHI-cache-actions.sm
@@ -2644,6 +2644,7 @@ action(Send_CompDBIDResp_Stale, desc="") {
     out_msg.type := CHIResponseType:CompDBIDResp;
     out_msg.responder := machineID;
     out_msg.Destination.add(tbe.requestor);
+    out_msg.txnId := tbe.txnId;
     out_msg.dbid := tbe.txnId;
     // We don't know if this is a stale writeback or a bug, so flag the
     // reponse so the requestor can make further checks