diff --git a/application/src/test/java/org/thingsboard/server/transport/lwm2m/ota/sql/Ota5LwM2MIntegrationTest.java b/application/src/test/java/org/thingsboard/server/transport/lwm2m/ota/sql/Ota5LwM2MIntegrationTest.java
index b2d95ec906..3065255687 100644
--- a/application/src/test/java/org/thingsboard/server/transport/lwm2m/ota/sql/Ota5LwM2MIntegrationTest.java
+++ b/application/src/test/java/org/thingsboard/server/transport/lwm2m/ota/sql/Ota5LwM2MIntegrationTest.java
@@ -45,8 +45,9 @@ import static org.thingsboard.server.common.data.ota.OtaPackageUpdateStatus.INIT
 import static org.thingsboard.server.common.data.ota.OtaPackageUpdateStatus.QUEUED;
 import static org.thingsboard.server.common.data.ota.OtaPackageUpdateStatus.UPDATED;
 import static org.thingsboard.server.common.data.ota.OtaPackageUpdateStatus.UPDATING;
-import static org.thingsboard.server.transport.lwm2m.Lwm2mTestHelper.*;
+import static org.thingsboard.server.transport.lwm2m.Lwm2mTestHelper.BINARY_APP_DATA_CONTAINER;
 import static org.thingsboard.server.transport.lwm2m.Lwm2mTestHelper.LwM2MProfileBootstrapConfigType.NONE;
+import static org.thingsboard.server.transport.lwm2m.Lwm2mTestHelper.RESOURCE_ID_0;
 import static org.thingsboard.server.transport.lwm2m.server.ota.DefaultLwM2MOtaUpdateService.FW_INSTANCE_ID;
 
 @Slf4j
diff --git a/common/transport/lwm2m/src/main/java/org/thingsboard/server/transport/lwm2m/server/downlink/DefaultLwM2mDownlinkMsgHandler.java b/common/transport/lwm2m/src/main/java/org/thingsboard/server/transport/lwm2m/server/downlink/DefaultLwM2mDownlinkMsgHandler.java
index ed685dfc6c..787db56411 100644
--- a/common/transport/lwm2m/src/main/java/org/thingsboard/server/transport/lwm2m/server/downlink/DefaultLwM2mDownlinkMsgHandler.java
+++ b/common/transport/lwm2m/src/main/java/org/thingsboard/server/transport/lwm2m/server/downlink/DefaultLwM2mDownlinkMsgHandler.java
@@ -99,6 +99,7 @@ import java.util.function.Function;
 import java.util.function.Predicate;
 import java.util.stream.Collectors;
 
+import static org.apache.commons.codec.binary.Base64.isBase64;
 import static org.eclipse.leshan.core.link.lwm2m.attributes.LwM2mAttributes.DIMENSION;
 import static org.eclipse.leshan.core.link.lwm2m.attributes.LwM2mAttributes.ENABLER_VERSION;
 import static org.eclipse.leshan.core.link.lwm2m.attributes.LwM2mAttributes.EVALUATE_MAXIMUM_PERIOD;
@@ -113,7 +114,6 @@ import static org.eclipse.leshan.core.link.lwm2m.attributes.LwM2mAttributes.SHOR
 import static org.eclipse.leshan.core.link.lwm2m.attributes.LwM2mAttributes.STEP;
 import static org.eclipse.leshan.core.model.ResourceModel.Type.OBJLNK;
 import static org.eclipse.leshan.core.model.ResourceModel.Type.OPAQUE;
-import static org.thingsboard.server.common.transport.util.JsonUtils.isBase64;
 import static org.thingsboard.server.transport.lwm2m.utils.LwM2MTransportUtil.convertMultiResourceValuesFromRpcBody;
 import static org.thingsboard.server.transport.lwm2m.utils.LwM2MTransportUtil.createModelsDefault;
 import static org.thingsboard.server.transport.lwm2m.utils.LwM2MTransportUtil.fromVersionedIdToObjectId;
diff --git a/common/transport/transport-api/src/main/java/org/thingsboard/server/common/transport/util/JsonUtils.java b/common/transport/transport-api/src/main/java/org/thingsboard/server/common/transport/util/JsonUtils.java
index a79d897daf..cdbc371c60 100644
--- a/common/transport/transport-api/src/main/java/org/thingsboard/server/common/transport/util/JsonUtils.java
+++ b/common/transport/transport-api/src/main/java/org/thingsboard/server/common/transport/util/JsonUtils.java
@@ -23,13 +23,10 @@ import org.thingsboard.server.gen.transport.TransportProtos.KeyValueProto;
 
 import java.util.List;
 import java.util.Map;
-import java.util.regex.Pattern;
+import static org.apache.commons.codec.binary.Base64.isBase64;
 
 public class JsonUtils {
 
-    private static final Pattern BASE64_PATTERN =
-            Pattern.compile("^[A-Za-z0-9+/]+={0,2}$");
-
     public static JsonObject getJsonObject(List<KeyValueProto> tsKv) {
         JsonObject json = new JsonObject();
         for (KeyValueProto kv : tsKv) {
@@ -87,8 +84,4 @@ public class JsonUtils {
 
         return jsonObject;
     }
-
-    public static boolean isBase64(String value) {
-        return value.length() % 4 == 0 && BASE64_PATTERN.matcher(value).matches();
-    }
 }