diff --git a/xroot_plugins/XrdSsiCtaRequestMessage.cpp b/xroot_plugins/XrdSsiCtaRequestMessage.cpp
index c3e5a0213407138de152daa16b9f5b8ab7a281dc..24247ca28e3b492f0ebe0c208c7c313ff43c19c3 100644
--- a/xroot_plugins/XrdSsiCtaRequestMessage.cpp
+++ b/xroot_plugins/XrdSsiCtaRequestMessage.cpp
@@ -441,7 +441,9 @@ void RequestMessage::processCLOSEW(const cta::eos::Notification &notification, c
 
    // Create a log entry
    cta::log::ScopedParamContainer params(m_lc);
-   params.add("fileId", archiveFileId).add("schedulerTime", t.secs());
+   params.add("fileId", archiveFileId);
+   params.add("schedulerTime", t.secs());
+   params.add("requesterInstance", notification.wf().requester_instance());
    m_lc.log(cta::log::INFO, "In RequestMessage::processCLOSEW(): queued file for archive.");
 
    // Set response type