diff --git a/common/transport/lwm2m/src/main/java/org/thingsboard/server/transport/lwm2m/server/DefaultLwM2mTransportService.java b/common/transport/lwm2m/src/main/java/org/thingsboard/server/transport/lwm2m/server/DefaultLwM2mTransportService.java
index 9dcfb62914..2ca0249b46 100644
--- a/common/transport/lwm2m/src/main/java/org/thingsboard/server/transport/lwm2m/server/DefaultLwM2mTransportService.java
+++ b/common/transport/lwm2m/src/main/java/org/thingsboard/server/transport/lwm2m/server/DefaultLwM2mTransportService.java
@@ -197,7 +197,7 @@ public class DefaultLwM2mTransportService implements LwM2MTransportService {
             root.add(new LwM2mTransportCoapResource(otaPackageDataCache, FIRMWARE_UPDATE_COAP_RESOURCE));
             root.add(new LwM2mTransportCoapResource(otaPackageDataCache, SOFTWARE_UPDATE_COAP_RESOURCE));
         }
-        return builder.build();
+        return leshanServer;
     }
 
     private void setServerWithCredentials(LeshanServerBuilder builder) {