diff --git a/src/test/regress/expected/aggregates.out b/src/test/regress/expected/aggregates.out
index d54a255e58..50695d83a2 100644
--- a/src/test/regress/expected/aggregates.out
+++ b/src/test/regress/expected/aggregates.out
@@ -1930,7 +1930,7 @@ select string_agg(v, decode('ee', 'hex')) from bytea_test_table;
 
 drop table bytea_test_table;
 -- Test parallel string_agg and array_agg
-create table pagg_test (x int, y int);
+create table pagg_test (x int, y int) with (autovacuum_enabled = off);
 insert into pagg_test
 select (case x % 4 when 1 then null else x end), x % 10
 from generate_series(1,5000) x;
diff --git a/src/test/regress/sql/aggregates.sql b/src/test/regress/sql/aggregates.sql
index 441e01d150..2905848ead 100644
--- a/src/test/regress/sql/aggregates.sql
+++ b/src/test/regress/sql/aggregates.sql
@@ -749,7 +749,7 @@ select string_agg(v, decode('ee', 'hex')) from bytea_test_table;
 drop table bytea_test_table;
 
 -- Test parallel string_agg and array_agg
-create table pagg_test (x int, y int);
+create table pagg_test (x int, y int) with (autovacuum_enabled = off);
 insert into pagg_test
 select (case x % 4 when 1 then null else x end), x % 10
 from generate_series(1,5000) x;