diff --git a/application/src/main/java/org/thingsboard/server/controller/DeviceController.java b/application/src/main/java/org/thingsboard/server/controller/DeviceController.java
index 07adb1ef1c..3eb6202aea 100644
--- a/application/src/main/java/org/thingsboard/server/controller/DeviceController.java
+++ b/application/src/main/java/org/thingsboard/server/controller/DeviceController.java
@@ -73,7 +73,6 @@ import org.thingsboard.server.service.entitiy.device.TbDeviceService;
 import org.thingsboard.server.service.security.model.SecurityUser;
 import org.thingsboard.server.service.security.permission.Operation;
 import org.thingsboard.server.service.security.permission.Resource;
-import org.thingsboard.server.service.security.system.SystemSecurityService;
 
 import javax.annotation.Nullable;
 import javax.validation.Valid;
@@ -135,7 +134,6 @@ public class DeviceController extends BaseController {
 
     private final TbDeviceService tbDeviceService;
 
-    private final SystemSecurityService systemSecurityService;
 
     @ApiOperation(value = "Get Device (getDeviceById)",
             notes = "Fetch the Device object based on the provided Device Id. " +
diff --git a/application/src/test/java/org/thingsboard/server/controller/DeviceControllerTest.java b/application/src/test/java/org/thingsboard/server/controller/DeviceControllerTest.java
index 287e383317..9ab5f7fde8 100644
--- a/application/src/test/java/org/thingsboard/server/controller/DeviceControllerTest.java
+++ b/application/src/test/java/org/thingsboard/server/controller/DeviceControllerTest.java
@@ -34,15 +34,12 @@ import org.springframework.boot.test.mock.mockito.SpyBean;
 import org.springframework.context.annotation.Bean;
 import org.springframework.context.annotation.Primary;
 import org.springframework.test.context.ContextConfiguration;
-import org.springframework.test.context.TestPropertySource;
 import org.thingsboard.common.util.JacksonUtil;
 import org.thingsboard.common.util.ThingsBoardExecutors;
 import org.thingsboard.server.common.data.Customer;
 import org.thingsboard.server.common.data.Device;
 import org.thingsboard.server.common.data.DeviceInfo;
 import org.thingsboard.server.common.data.DeviceProfile;
-import org.thingsboard.server.common.data.DeviceProfileType;
-import org.thingsboard.server.common.data.DeviceTransportType;
 import org.thingsboard.server.common.data.EntitySubtype;
 import org.thingsboard.server.common.data.EntityType;
 import org.thingsboard.server.common.data.OtaPackageInfo;
@@ -52,16 +49,10 @@ import org.thingsboard.server.common.data.StringUtils;
 import org.thingsboard.server.common.data.Tenant;
 import org.thingsboard.server.common.data.User;
 import org.thingsboard.server.common.data.audit.ActionType;
-import org.thingsboard.server.common.data.device.credentials.BasicMqttCredentials;
-import org.thingsboard.server.common.data.device.profile.CoapDeviceProfileTransportConfiguration;
-import org.thingsboard.server.common.data.device.profile.DefaultDeviceProfileConfiguration;
-import org.thingsboard.server.common.data.device.profile.DeviceProfileData;
-import org.thingsboard.server.common.data.device.profile.MqttDeviceProfileTransportConfiguration;
 import org.thingsboard.server.common.data.edge.Edge;
 import org.thingsboard.server.common.data.id.CustomerId;
 import org.thingsboard.server.common.data.id.DeviceCredentialsId;
 import org.thingsboard.server.common.data.id.DeviceId;
-import org.thingsboard.server.common.data.id.DeviceProfileId;
 import org.thingsboard.server.common.data.id.EntityId;
 import org.thingsboard.server.common.data.page.PageData;
 import org.thingsboard.server.common.data.page.PageLink;
@@ -93,7 +84,6 @@ import static org.springframework.test.web.servlet.result.MockMvcResultMatchers.
 import static org.thingsboard.server.common.data.ota.OtaPackageType.FIRMWARE;
 import static org.thingsboard.server.common.data.ota.OtaPackageType.SOFTWARE;
 import static org.thingsboard.server.dao.model.ModelConstants.NULL_UUID;
-
 @ContextConfiguration(classes = {DeviceControllerTest.Config.class})
 @DaoSqlTest
 public class DeviceControllerTest extends AbstractControllerTest {
diff --git a/common/dao-api/src/main/java/org/thingsboard/server/dao/device/DeviceService.java b/common/dao-api/src/main/java/org/thingsboard/server/dao/device/DeviceService.java
index 510250d264..a90ea9a572 100644
--- a/common/dao-api/src/main/java/org/thingsboard/server/dao/device/DeviceService.java
+++ b/common/dao-api/src/main/java/org/thingsboard/server/dao/device/DeviceService.java
@@ -36,9 +36,7 @@ import org.thingsboard.server.common.data.security.DeviceCredentials;
 import org.thingsboard.server.dao.device.provision.ProvisionRequest;
 import org.thingsboard.server.dao.entity.EntityDaoService;
 
-import java.net.URISyntaxException;
 import java.util.List;
-import java.util.Map;
 import java.util.UUID;
 
 public interface DeviceService extends EntityDaoService {
diff --git a/dao/src/main/java/org/thingsboard/server/dao/device/DeviceServiceImpl.java b/dao/src/main/java/org/thingsboard/server/dao/device/DeviceServiceImpl.java
index 5a6caefd58..3f9ee12dda 100644
--- a/dao/src/main/java/org/thingsboard/server/dao/device/DeviceServiceImpl.java
+++ b/dao/src/main/java/org/thingsboard/server/dao/device/DeviceServiceImpl.java
@@ -96,7 +96,6 @@ public class DeviceServiceImpl extends AbstractCachedEntityService<DeviceCacheKe
     public static final String INCORRECT_CUSTOMER_ID = "Incorrect customerId ";
     public static final String INCORRECT_DEVICE_ID = "Incorrect deviceId ";
     public static final String INCORRECT_EDGE_ID = "Incorrect edgeId ";
-    public static final String DEFAULT_DEVICE_TELEMETRY_TOPIC = "v1/devices/me/telemetry";
 
     @Autowired
     private DeviceDao deviceDao;