diff --git a/src/AzureIoTHub.Portal.Server.Tests.Unit/Controllers/v1.0/LoRaWAN/LoRaWANConcentratorsControllerTest.cs b/src/AzureIoTHub.Portal.Server.Tests.Unit/Controllers/v1.0/LoRaWAN/LoRaWANConcentratorsControllerTest.cs
index 7cf1e7f60..103fb7f5c 100644
--- a/src/AzureIoTHub.Portal.Server.Tests.Unit/Controllers/v1.0/LoRaWAN/LoRaWANConcentratorsControllerTest.cs
+++ b/src/AzureIoTHub.Portal.Server.Tests.Unit/Controllers/v1.0/LoRaWAN/LoRaWANConcentratorsControllerTest.cs
@@ -391,11 +391,6 @@ public async Task WhenGetDeviceThrowAnErrorUpdateDeviceAsyncWithValidArgumentSho
                 RouterConfig = new RouterConfig()
             };
 
-            var twin = new Twin
-            {
-                DeviceId = concentrator.DeviceId,
-            };
-
             _ = this.mockDeviceService.Setup(x => x.GetDevice(It.Is<string>(c => c == concentrator.DeviceId)))
                 .ThrowsAsync(new InternalServerErrorException(""));
 
@@ -421,11 +416,6 @@ public async Task WhenUpdateDeviceThrowAnErrorUpdateDeviceAsyncWithValidArgument
                 RouterConfig = new RouterConfig()
             };
 
-            var twin = new Twin
-            {
-                DeviceId = concentrator.DeviceId,
-            };
-
             var device = new Device(concentrator.DeviceId);
 
             _ = this.mockDeviceService.Setup(x => x.GetDevice(It.Is<string>(c => c == concentrator.DeviceId)))