diff --git a/application/src/main/java/org/thingsboard/server/service/install/update/ImagesUpdater.java b/application/src/main/java/org/thingsboard/server/service/install/update/ImagesUpdater.java
index 501cd788e3..3914f049ce 100644
--- a/application/src/main/java/org/thingsboard/server/service/install/update/ImagesUpdater.java
+++ b/application/src/main/java/org/thingsboard/server/service/install/update/ImagesUpdater.java
@@ -147,7 +147,7 @@ public class ImagesUpdater {
             try {
                 entity = dao.findById(TenantId.SYS_TENANT_ID, id.getId());
             } catch (Exception e) {
-                log.error("Failed to update {} images: error fetching {} by id [{}]: {}", type, type, id.getId(), StringUtils.abbreviate(e.toString(), 1000));
+                log.error("Failed to update {} images: error fetching entity by id [{}]: {}", type, id.getId(), StringUtils.abbreviate(e.toString(), 1000));
                 continue;
             }
             try {
diff --git a/common/transport/lwm2m/src/main/java/org/thingsboard/server/transport/lwm2m/bootstrap/secure/TbLwM2MDtlsBootstrapCertificateVerifier.java b/common/transport/lwm2m/src/main/java/org/thingsboard/server/transport/lwm2m/bootstrap/secure/TbLwM2MDtlsBootstrapCertificateVerifier.java
index 9c86b23084..d31d47fcd4 100644
--- a/common/transport/lwm2m/src/main/java/org/thingsboard/server/transport/lwm2m/bootstrap/secure/TbLwM2MDtlsBootstrapCertificateVerifier.java
+++ b/common/transport/lwm2m/src/main/java/org/thingsboard/server/transport/lwm2m/bootstrap/secure/TbLwM2MDtlsBootstrapCertificateVerifier.java
@@ -82,7 +82,7 @@ public class TbLwM2MDtlsBootstrapCertificateVerifier implements NewAdvancedCerti
                 staticCertificateVerifier = new StaticNewAdvancedCertificateVerifier(trustedCertificates, new RawPublicKeyIdentity[0], null);
             }
         } catch (Exception e) {
-            log.warn("ailed to initialize the LwM2M certificate verifier", e);
+            log.warn("Failed to initialize the LwM2M certificate verifier", e);
         }
     }
 
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 2c111151b3..dd967953ad 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
@@ -65,7 +65,7 @@ public class BaseAlarmCommentService extends AbstractEntityService implements Al
 
     @Override
     public AlarmComment saveAlarmComment(TenantId tenantId, AlarmComment alarmComment) {
-        log.debug("Deleting Alarm Comment: {}", alarmComment);
+        log.debug("Saving Alarm Comment: {}", alarmComment);
         alarmCommentDataValidator.validate(alarmComment, c -> tenantId);
         AlarmComment result = alarmCommentDao.save(tenantId, alarmComment);
         eventPublisher.publishEvent(DeleteEntityEvent.builder().tenantId(tenantId).entity(result)