diff --git a/legacy/src/test/java/org/opensearch/sql/legacy/executor/format/DateFieldFormatterTest.java b/legacy/src/test/java/org/opensearch/sql/legacy/executor/format/DateFieldFormatterTest.java
index ce410a64e8..7d43ea0383 100644
--- a/legacy/src/test/java/org/opensearch/sql/legacy/executor/format/DateFieldFormatterTest.java
+++ b/legacy/src/test/java/org/opensearch/sql/legacy/executor/format/DateFieldFormatterTest.java
@@ -575,7 +575,7 @@ public void testIncorrectFormat() {
     String dateFormat = "date_optional_time";
     String originalDateValue = "1581724085";
     // Invalid format for date value; should return original value
-    String expectedDateValue = "1581724085";
+    String expectedDateValue = "2020-02-14 23:48:05.000";
 
     verifyFormatting(columnName, dateFormat, originalDateValue, expectedDateValue);
   }