diff --git a/ext/pgsql/pgsql.c b/ext/pgsql/pgsql.c
index 68325155c23..9779193bd0e 100644
--- a/ext/pgsql/pgsql.c
+++ b/ext/pgsql/pgsql.c
@@ -178,6 +178,7 @@ static void pgsql_link_free(pgsql_link_handle *link)
 		PQclear(res);
 	}
 	if (!link->persistent) {
+		PQuntrace(link->conn);
 		PQfinish(link->conn);
 	}
 	PGG(num_links)--;