diff --git a/pjmedia/src/pjmedia/conference.c b/pjmedia/src/pjmedia/conference.c
index a57642cf58..2daffdd1a7 100644
--- a/pjmedia/src/pjmedia/conference.c
+++ b/pjmedia/src/pjmedia/conference.c
@@ -815,7 +815,7 @@ PJ_DEF(pj_status_t) pjmedia_conf_add_port( pjmedia_conf *conf,
     }
 
     /* Put the port. */
-    PJ_LOG(2, THIS_FILE, "ADDING conf PORT slot %d", index);
+    PJ_LOG(2, (THIS_FILE, "ADDING conf PORT slot %d", index));
     conf->ports[index] = conf_port;
     conf->port_cnt++;