diff --git a/extensions-core/src/test/java/org/thingsboard/server/extensions/core/filter/DeviceAttributesFilterTest.java b/extensions-core/src/test/java/org/thingsboard/server/extensions/core/filter/DeviceAttributesFilterTest.java
index 1319978..ab06ff0 100644
--- a/extensions-core/src/test/java/org/thingsboard/server/extensions/core/filter/DeviceAttributesFilterTest.java
+++ b/extensions-core/src/test/java/org/thingsboard/server/extensions/core/filter/DeviceAttributesFilterTest.java
@@ -14,7 +14,7 @@
* limitations under the License.
*/
package org.thingsboard.server.extensions.core.filter;
-С
+
import org.thingsboard.server.common.data.id.DeviceId;
import org.thingsboard.server.common.data.kv.AttributeKvEntry;
import org.thingsboard.server.common.data.kv.BaseAttributeKvEntry;