diff --git a/iothub/service/samples/readme.md b/iothub/service/samples/readme.md
index 4003c89e3c..4460522296 100644
--- a/iothub/service/samples/readme.md
+++ b/iothub/service/samples/readme.md
@@ -17,11 +17,11 @@ Service samples were moved to [Azure-Samples/azure-iot-samples-csharp][samples-r
 [samples-repo]: https://github.com/Azure-Samples/azure-iot-samples-csharp
 [service-samples]: https://github.com/Azure-Samples/azure-iot-samples-csharp/tree/master/iot-hub/Samples/service
 [adm-sample]: https://github.com/Azure-Samples/azure-iot-samples-csharp/tree/master/iot-hub/Samples/service/AutomaticDeviceManagementSample
-[device-streaming-sample]: https://github.com/Azure-Samples/azure-iot-samples-csharp/tree/master/iot-hub/Samples/service/DeviceStreamingSample
+[device-streaming-sample]: https://github.com/Azure-Samples/azure-iot-samples-csharp/tree/preview/iot-hub/Samples/service/DeviceStreamingSample
 [edge-deployment-sample]: https://github.com/Azure-Samples/azure-iot-samples-csharp/tree/master/iot-hub/Samples/service/EdgeDeploymentSample
 [import-export-sample]: https://github.com/Azure-Samples/azure-iot-samples-csharp/tree/master/iot-hub/Samples/service/ImportExportDevicesSample
 [jobs-sample]: https://github.com/Azure-Samples/azure-iot-samples-csharp/tree/master/iot-hub/Samples/service/JobsSample
 [reg-man-sample]: https://github.com/Azure-Samples/azure-iot-samples-csharp/tree/master/iot-hub/Samples/service/RegistryManagerSample
 [service-client-sample]: https://github.com/Azure-Samples/azure-iot-samples-csharp/tree/master/iot-hub/Samples/service/ServiceClientSample
 [pnp-service-sample]: https://github.com/Azure-Samples/azure-iot-samples-csharp/tree/master/iot-hub/Samples/service/PnpServiceSamples
-[digital-twin-client-sample]: https://github.com/Azure-Samples/azure-iot-samples-csharp/tree/master/iot-hub/Samples/service/DigitalTwinClientSamples
\ No newline at end of file
+[digital-twin-client-sample]: https://github.com/Azure-Samples/azure-iot-samples-csharp/tree/master/iot-hub/Samples/service/DigitalTwinClientSamples