diff --git a/include/types/log.h b/include/types/log.h
index 02243260b..70dc9faf5 100644
--- a/include/types/log.h
+++ b/include/types/log.h
@@ -131,6 +131,7 @@ struct logformat_node {
 #define LW_RSPHDR	2048	/* response header(s) */
 #define LW_BCKIP	4096	/* backend IP */
 #define LW_FRTIP 	8192	/* frontend IP */
+#define LW_XPRT		16384	/* transport layer information (eg: SSL) */
 
 struct logsrv {
 	struct list list;
diff --git a/src/session.c b/src/session.c
index 7c218bf80..85171037b 100644
--- a/src/session.c
+++ b/src/session.c
@@ -488,6 +488,10 @@ int session_complete(struct session *s)
 		goto out_free_rep;
 	}
 
+	/* if logs require transport layer information, note it on the connection */
+	if (s->logs.logwait & LW_XPRT)
+		s->si[0].conn.flags |= CO_FL_XPRT_TRACKED;
+
 	/* we want the connection handler to notify the stream interface about updates. */
 	s->si[0].conn.flags |= CO_FL_WAKE_DATA;