diff --git a/dao/src/main/java/org/thingsboard/server/dao/alarm/AlarmCommentDao.java b/dao/src/main/java/org/thingsboard/server/dao/alarm/AlarmCommentDao.java
index 04f2674d39..ff4c77bf7f 100644
--- a/dao/src/main/java/org/thingsboard/server/dao/alarm/AlarmCommentDao.java
+++ b/dao/src/main/java/org/thingsboard/server/dao/alarm/AlarmCommentDao.java
@@ -28,7 +28,9 @@ import org.thingsboard.server.dao.Dao;
 import java.util.UUID;
 
 public interface AlarmCommentDao extends Dao<AlarmComment> {
+
     AlarmComment createAlarmComment(TenantId tenantId, AlarmComment alarmComment);
+
     void deleteAlarmComment(TenantId tenantId, AlarmCommentId alarmCommentId);
 
     AlarmComment findAlarmCommentById(TenantId tenantId, UUID key);
diff --git a/dao/src/main/java/org/thingsboard/server/dao/alarm/BaseAlarmCommentService.java b/dao/src/main/java/org/thingsboard/server/dao/alarm/BaseAlarmCommentService.java
index 1de9080a00..766cac8fbe 100644
--- a/dao/src/main/java/org/thingsboard/server/dao/alarm/BaseAlarmCommentService.java
+++ b/dao/src/main/java/org/thingsboard/server/dao/alarm/BaseAlarmCommentService.java
@@ -48,10 +48,13 @@ public class BaseAlarmCommentService extends AbstractEntityService implements Al
 
     @Autowired
     private AlarmCommentDao alarmCommentDao;
+
     @Autowired
     private UserService userService;
+
     @Autowired
     private DataValidator<AlarmComment> alarmCommentDataValidator;
+
     @Override
     public AlarmCommentOperationResult createOrUpdateAlarmComment(TenantId tenantId, AlarmComment alarmComment) {
         alarmCommentDataValidator.validate(alarmComment, tenantId);
diff --git a/dao/src/main/java/org/thingsboard/server/dao/model/ModelConstants.java b/dao/src/main/java/org/thingsboard/server/dao/model/ModelConstants.java
index bd462eb6b6..fc5c663d7c 100644
--- a/dao/src/main/java/org/thingsboard/server/dao/model/ModelConstants.java
+++ b/dao/src/main/java/org/thingsboard/server/dao/model/ModelConstants.java
@@ -305,7 +305,6 @@ public class ModelConstants {
     public static final String ALARM_COMMENT_TYPE = "type";
     public static final String ALARM_COMMENT_COMMENT = "comment";
 
-
     /**
      * Cassandra entity relation constants.
      */