diff --git a/src/main/java/com/chat/yourway/dto/response/PrivateTopicInfoResponseDto.java b/src/main/java/com/chat/yourway/dto/response/PrivateTopicInfoResponseDto.java
index d46af2f..acf0fa4 100644
--- a/src/main/java/com/chat/yourway/dto/response/PrivateTopicInfoResponseDto.java
+++ b/src/main/java/com/chat/yourway/dto/response/PrivateTopicInfoResponseDto.java
@@ -26,6 +26,7 @@ public class PrivateTopicInfoResponseDto {
   @Schema(description = "Created time")
   private LocalDateTime createdAt;
 
+  @Schema(description = "Unread messages from the users")
   private List<MessageResponseDto> unreadMessages;
 
   private LastMessageResponseDto lastMessage;
diff --git a/src/main/java/com/chat/yourway/service/TopicService.java b/src/main/java/com/chat/yourway/service/TopicService.java
index 8f65fb6..2692774 100644
--- a/src/main/java/com/chat/yourway/service/TopicService.java
+++ b/src/main/java/com/chat/yourway/service/TopicService.java
@@ -17,7 +17,6 @@
 import com.chat.yourway.model.TopicScope;
 import com.chat.yourway.repository.jpa.TagRepository;
 import com.chat.yourway.repository.jpa.TopicRepository;
-import lombok.RequiredArgsConstructor;
 import lombok.extern.slf4j.Slf4j;
 import org.mapstruct.Context;
 import org.springframework.context.annotation.Lazy;