diff --git a/src/main/java/com/moabam/api/application/room/SearchService.java b/src/main/java/com/moabam/api/application/room/SearchService.java
index c4c37f6b..9e62b9d0 100644
--- a/src/main/java/com/moabam/api/application/room/SearchService.java
+++ b/src/main/java/com/moabam/api/application/room/SearchService.java
@@ -1,9 +1,8 @@
 package com.moabam.api.application.room;
 
-import static com.moabam.global.common.util.GlobalConstant.NOT_COMPLETED_RANK;
-import static com.moabam.global.common.util.GlobalConstant.ROOM_FIXED_SEARCH_SIZE;
+import static com.moabam.global.common.util.GlobalConstant.*;
 import static com.moabam.global.error.model.ErrorMessage.*;
-import static org.apache.commons.lang3.StringUtils.isEmpty;
+import static org.apache.commons.lang3.StringUtils.*;
 
 import java.time.LocalDate;
 import java.time.Period;
@@ -195,7 +194,7 @@ public UnJoinedRoomDetailsResponse getUnJoinedRoomDetails(Long roomId) {
 		List<DailyMemberCertification> sortedDailyMemberCertifications =
 			certificationsSearchRepository.findSortedDailyMemberCertifications(roomId, clockHolder.date());
 		List<Long> memberIds = sortedDailyMemberCertifications.stream()
-			.map(DailyMemberCertification::getId)
+			.map(DailyMemberCertification::getMemberId)
 			.toList();
 		List<Member> members = memberService.getRoomMembers(memberIds);
 		List<Inventory> inventories = inventorySearchRepository.findDefaultInventories(memberIds,
diff --git a/src/test/java/com/moabam/api/presentation/RoomControllerTest.java b/src/test/java/com/moabam/api/presentation/RoomControllerTest.java
index ad5d3a2c..ebfbfd16 100644
--- a/src/test/java/com/moabam/api/presentation/RoomControllerTest.java
+++ b/src/test/java/com/moabam/api/presentation/RoomControllerTest.java
@@ -993,22 +993,25 @@ void get_un_joined_room_details() throws Exception {
 		Room room = RoomFixture.room("테스트 방", NIGHT, 21);
 		Room savedRoom = roomRepository.save(room);
 
+		Member member1 = MemberFixture.member("901010", "testtest");
+		member1 = memberRepository.save(member1);
+
 		Item item = ItemFixture.nightMageSkin();
 
-		Inventory inventory = InventoryFixture.inventory(1L, item);
+		Inventory inventory = InventoryFixture.inventory(member1.getId(), item);
 		inventory.select();
 
 		itemRepository.save(item);
 		inventoryRepository.save(inventory);
 
-		Participant participant = RoomFixture.participant(savedRoom, member.getId());
+		Participant participant = RoomFixture.participant(savedRoom, member1.getId());
 		participantRepository.save(participant);
 
 		Routine routine1 = RoomFixture.routine(savedRoom, "물 마시기");
 		Routine routine2 = RoomFixture.routine(savedRoom, "커피 마시기");
 		routineRepository.saveAll(List.of(routine1, routine2));
 
-		DailyMemberCertification dailyMemberCertification = RoomFixture.dailyMemberCertification(member.getId(),
+		DailyMemberCertification dailyMemberCertification = RoomFixture.dailyMemberCertification(member1.getId(),
 			savedRoom.getId(), participant);
 		dailyMemberCertificationRepository.save(dailyMemberCertification);