diff --git a/dbutils.c b/dbutils.c
index ce1c1192..5b3a3dc3 100644
--- a/dbutils.c
+++ b/dbutils.c
@@ -2920,6 +2920,7 @@ get_last_wal_receive_location(PGconn *conn)
 /* BDR functions */
 /* ============= */
 
+/* possibly use bdr.bdr_is_active_in_db() ? */
 bool
 is_bdr_db(PGconn *conn)
 {