diff --git a/src/test/regress/expected/misc_functions.out b/src/test/regress/expected/misc_functions.out
index a1ee4dbb3b..b65f084909 100644
--- a/src/test/regress/expected/misc_functions.out
+++ b/src/test/regress/expected/misc_functions.out
@@ -167,7 +167,8 @@ select count(*) > 0 as ok from (select * from pg_ls_waldir() limit 1) ss;
  t
 (1 row)
 
-select (pg_ls_waldir()).size = :segsize as ok limit 1;
+select (w).size = :segsize as ok
+from (select pg_ls_waldir() w) ss where length((w).name) = 24 limit 1;
  ok 
 ----
  t
diff --git a/src/test/regress/sql/misc_functions.sql b/src/test/regress/sql/misc_functions.sql
index 795587e70f..b65cd961fc 100644
--- a/src/test/regress/sql/misc_functions.sql
+++ b/src/test/regress/sql/misc_functions.sql
@@ -46,4 +46,5 @@ select count(*) > 0 as ok from (select pg_ls_waldir()) ss;
 -- Test not-run-to-completion cases.
 select * from pg_ls_waldir() limit 0;
 select count(*) > 0 as ok from (select * from pg_ls_waldir() limit 1) ss;
-select (pg_ls_waldir()).size = :segsize as ok limit 1;
+select (w).size = :segsize as ok
+from (select pg_ls_waldir() w) ss where length((w).name) = 24 limit 1;