diff --git a/src/test/regress/expected/type_sanity.out b/src/test/regress/expected/type_sanity.out
index 3ffd9d0d71..257b6cac12 100644
--- a/src/test/regress/expected/type_sanity.out
+++ b/src/test/regress/expected/type_sanity.out
@@ -713,7 +713,7 @@ CREATE TABLE tab_core_types AS SELECT
   'abc'::refcursor,
   '1 2'::int2vector,
   '1 2'::oidvector,
-  format('%s=UC/%s', USER, USER)::aclitem,
+  format('%I=UC/%I', USER, USER)::aclitem AS aclitem,
   'a fat cat sat on a mat and ate a fat rat'::tsvector,
   'fat & rat'::tsquery,
   'a0eebc99-9c0b-4ef8-bb6d-6bb9bd380a11'::uuid,
diff --git a/src/test/regress/sql/type_sanity.sql b/src/test/regress/sql/type_sanity.sql
index f92773b75e..8281076423 100644
--- a/src/test/regress/sql/type_sanity.sql
+++ b/src/test/regress/sql/type_sanity.sql
@@ -535,7 +535,7 @@ CREATE TABLE tab_core_types AS SELECT
   'abc'::refcursor,
   '1 2'::int2vector,
   '1 2'::oidvector,
-  format('%s=UC/%s', USER, USER)::aclitem,
+  format('%I=UC/%I', USER, USER)::aclitem AS aclitem,
   'a fat cat sat on a mat and ate a fat rat'::tsvector,
   'fat & rat'::tsquery,
   'a0eebc99-9c0b-4ef8-bb6d-6bb9bd380a11'::uuid,