diff --git a/libs/sofia-sip/libsofia-sip-ua/tport/tport_logging.c b/libs/sofia-sip/libsofia-sip-ua/tport/tport_logging.c
index 7fc2ec3ed5..9e2d7916b1 100644
--- a/libs/sofia-sip/libsofia-sip-ua/tport/tport_logging.c
+++ b/libs/sofia-sip/libsofia-sip-ua/tport/tport_logging.c
@@ -232,8 +232,7 @@ void tport_log_msg(tport_t *self, msg_t *msg,
     n += iov[i].mv_len;
 
   tport_stamp(self, msg, stamp, what, n, via, now);
-  su_log("%s", stamp);
-  su_log("   " MSG_SEPARATOR);
+  su_log("%s   " MSG_SEPARATOR, stamp);
 
   for (i = 0; truncated == 0 && i < iovlen && i < 80; i++) {
     char *s = iov[i].mv_base, *end = s + iov[i].mv_len;