diff --git a/src/test/regress/expected/datetime.out b/src/test/regress/expected/datetime.out
index d8548f4ee8d7aa9975eaf190709b364d8e76f245..ad5f86119539c2a9967f82716c2c97783b123d9a 100644
--- a/src/test/regress/expected/datetime.out
+++ b/src/test/regress/expected/datetime.out
@@ -4,7 +4,7 @@ QUERY: INSERT INTO DATETIME_TBL VALUES ('now');
 QUERY: INSERT INTO DATETIME_TBL VALUES ('today');
 QUERY: INSERT INTO DATETIME_TBL VALUES ('yesterday');
 QUERY: INSERT INTO DATETIME_TBL VALUES ('tomorrow');
-QUERY: INSERT INTO DATETIME_TBL VALUES ('tomorrow PST');
+QUERY: INSERT INTO DATETIME_TBL VALUES ('tomorrow EST');
 QUERY: INSERT INTO DATETIME_TBL VALUES ('tomorrow zulu');
 QUERY: SELECT count(*) AS one FROM DATETIME_TBL WHERE d1 = 'today'::datetime;
 one