diff --git a/src/test/regress/expected/tuplesort.out b/src/test/regress/expected/tuplesort.out
index 0e8b5bf4a3..6dd97e7427 100644
--- a/src/test/regress/expected/tuplesort.out
+++ b/src/test/regress/expected/tuplesort.out
@@ -343,6 +343,19 @@ ORDER BY ctid DESC LIMIT 5;
 (5 rows)
 
 ROLLBACK;
+----
+-- test sorting of large datums VALUES
+----
+-- Ensure the order is correct and values look intact
+SELECT LEFT(a,10),b FROM
+    (VALUES(REPEAT('a', 512 * 1024),1),(REPEAT('b', 512 * 1024),2)) v(a,b)
+ORDER BY v.a DESC;
+    left    | b 
+------------+---
+ bbbbbbbbbb | 2
+ aaaaaaaaaa | 1
+(2 rows)
+
 ----
 -- test forward and backward scans for in-memory and disk based tuplesort
 ----
diff --git a/src/test/regress/sql/tuplesort.sql b/src/test/regress/sql/tuplesort.sql
index 658fe98dc5..8476e594e6 100644
--- a/src/test/regress/sql/tuplesort.sql
+++ b/src/test/regress/sql/tuplesort.sql
@@ -146,6 +146,15 @@ FROM abbrev_abort_uuids
 ORDER BY ctid DESC LIMIT 5;
 ROLLBACK;
 
+----
+-- test sorting of large datums VALUES
+----
+
+-- Ensure the order is correct and values look intact
+SELECT LEFT(a,10),b FROM
+    (VALUES(REPEAT('a', 512 * 1024),1),(REPEAT('b', 512 * 1024),2)) v(a,b)
+ORDER BY v.a DESC;
+
 ----
 -- test forward and backward scans for in-memory and disk based tuplesort
 ----