diff --git a/backend/src/main/java/com/woowacourse/zzimkkong/domain/TimeSlot.java b/backend/src/main/java/com/woowacourse/zzimkkong/domain/TimeSlot.java
index be4e78ad3..068d788c8 100644
--- a/backend/src/main/java/com/woowacourse/zzimkkong/domain/TimeSlot.java
+++ b/backend/src/main/java/com/woowacourse/zzimkkong/domain/TimeSlot.java
@@ -46,6 +46,10 @@ public static void validateStartEndTime(final LocalTime startTime, final LocalTi
         if (TimeUnit.cannotDivideByMinimumTimeUnit(startTime.getMinute())) {
             throw new IllegalTimeUnitValueException(startTime.getMinute());
         }
+
+        if (TimeUnit.cannotDivideByMinimumTimeUnit(endTime.getMinute())) {
+            throw new IllegalTimeUnitValueException(endTime.getMinute());
+        }
     }
 
     public boolean isNotDivisibleBy(final TimeUnit timeUnit) {
diff --git a/backend/src/test/java/com/woowacourse/zzimkkong/domain/TimeSlotTest.java b/backend/src/test/java/com/woowacourse/zzimkkong/domain/TimeSlotTest.java
index be8b32cd3..3584d83df 100644
--- a/backend/src/test/java/com/woowacourse/zzimkkong/domain/TimeSlotTest.java
+++ b/backend/src/test/java/com/woowacourse/zzimkkong/domain/TimeSlotTest.java
@@ -26,7 +26,7 @@ void validateStartEndTime_endTimeEqualOrShorterThanStartTime(final LocalTime sta
     }
 
     @ParameterizedTest
-    @DisplayName("startTime이 5의 배수가 아니면 에러를 반환한다")
+    @DisplayName("startTime이나 endTime의 분 단위가 5의 배수가 아니면 에러를 반환한다")
     @MethodSource("provideStartAndEndTime_notDivisibleByMinimumTimeUnit")
     void validateStartEndTime_startTimeAndEndTimeNotDivisibleByMinimumTimeUnit(final LocalTime startTime, final LocalTime endTime) {
         assertThatThrownBy(() -> TimeSlot.validateStartEndTime(startTime, endTime))
@@ -107,9 +107,9 @@ private static Stream<Arguments> provideStartAndEndTime_endTimeEqualOrShorterTha
 
     private static Stream<Arguments> provideStartAndEndTime_notDivisibleByMinimumTimeUnit() {
         return Stream.of(
-                Arguments.of(LocalTime.of(10, 1), LocalTime.of(10, 5)),
+                Arguments.of(LocalTime.of(10, 0), LocalTime.of(10, 1)),
                 Arguments.of(LocalTime.of(12, 4), LocalTime.of(12, 5)),
-                Arguments.of(LocalTime.of(13, 6), LocalTime.of(13, 10))
+                Arguments.of(LocalTime.of(13, 6), LocalTime.of(13, 11))
         );
     }