diff --git a/bonus-common/bonus-common-core/src/test/java/com/bonus/common/core/utils/DateUtilsTest.java b/bonus-common/bonus-common-core/src/test/java/com/bonus/common/core/utils/DateUtilsTest.java
index def0b9d..89ca6aa 100644
--- a/bonus-common/bonus-common-core/src/test/java/com/bonus/common/core/utils/DateUtilsTest.java
+++ b/bonus-common/bonus-common-core/src/test/java/com/bonus/common/core/utils/DateUtilsTest.java
@@ -186,7 +186,7 @@ public class DateUtilsTest {
 
     @Test
     public void testGetMonthOrDay() {
-        String monthOrDay = DateUtils.getMonthOrDay(30, "/");
+        String monthOrDay = DateUtils.getMonthOrDay(28, "/");
         assertNotNull(monthOrDay);
         assertTrue(monthOrDay.matches("\\d{2}/\\d{2}"));
     }