diff --git a/src/Logging/Logging.AzureAppServices/test/TestBlobSink.cs b/src/Logging/Logging.AzureAppServices/test/TestBlobSink.cs
index 23afaf1787..c44a6d17e2 100644
--- a/src/Logging/Logging.AzureAppServices/test/TestBlobSink.cs
+++ b/src/Logging/Logging.AzureAppServices/test/TestBlobSink.cs
@@ -1,3 +1,6 @@
+// Copyright (c) .NET Foundation. All rights reserved.
+// Licensed under the Apache License, Version 2.0. See License.txt in the project root for license information.
+
 using System;
 using System.Threading;
 using System.Threading.Tasks;
diff --git a/src/Logging/Logging.Testing/src/CollectDumpAttribute.cs b/src/Logging/Logging.Testing/src/CollectDumpAttribute.cs
index 012a5c8fa1..c9e8ee3fa6 100644
--- a/src/Logging/Logging.Testing/src/CollectDumpAttribute.cs
+++ b/src/Logging/Logging.Testing/src/CollectDumpAttribute.cs
@@ -1,4 +1,4 @@
-// Copyright(c) .NET Foundation.All rights reserved.
+// Copyright (c) .NET Foundation. All rights reserved.
 // Licensed under the Apache License, Version 2.0. See License.txt in the project root for license information.
 
 using System;
diff --git a/src/Logging/Logging.Testing/src/ITestSink.cs b/src/Logging/Logging.Testing/src/ITestSink.cs
index 8b0bef5033..ab468f420d 100644
--- a/src/Logging/Logging.Testing/src/ITestSink.cs
+++ b/src/Logging/Logging.Testing/src/ITestSink.cs
@@ -1,4 +1,7 @@
-using System;
+// Copyright (c) .NET Foundation. All rights reserved.
+// Licensed under the Apache License, Version 2.0. See License.txt in the project root for license information.
+
+using System;
 using System.Collections.Concurrent;
 
 namespace Microsoft.Extensions.Logging.Testing
diff --git a/src/Logging/Logging.Testing/src/LogValuesAssert.cs b/src/Logging/Logging.Testing/src/LogValuesAssert.cs
index ea769e68e2..57b6e983a7 100644
--- a/src/Logging/Logging.Testing/src/LogValuesAssert.cs
+++ b/src/Logging/Logging.Testing/src/LogValuesAssert.cs
@@ -1,4 +1,4 @@
-// Copyright(c) .NET Foundation.All rights reserved.
+// Copyright (c) .NET Foundation. All rights reserved.
 // Licensed under the Apache License, Version 2.0. See License.txt in the project root for license information.
 
 using System;
diff --git a/src/Logging/Logging.Testing/test/LogValuesAssertTest.cs b/src/Logging/Logging.Testing/test/LogValuesAssertTest.cs
index b5e1d98738..1d85ddec13 100644
--- a/src/Logging/Logging.Testing/test/LogValuesAssertTest.cs
+++ b/src/Logging/Logging.Testing/test/LogValuesAssertTest.cs
@@ -1,4 +1,4 @@
-// Copyright(c) .NET Foundation.All rights reserved.
+// Copyright (c) .NET Foundation. All rights reserved.
 // Licensed under the Apache License, Version 2.0. See License.txt in the project root for license information.
 
 using System.Collections.Generic;
diff --git a/src/Logging/Logging.Testing/test/Properties/AssemblyInfo.cs b/src/Logging/Logging.Testing/test/Properties/AssemblyInfo.cs
index 82616e2737..8ae4233e71 100644
--- a/src/Logging/Logging.Testing/test/Properties/AssemblyInfo.cs
+++ b/src/Logging/Logging.Testing/test/Properties/AssemblyInfo.cs
@@ -1,3 +1,6 @@
+// Copyright (c) .NET Foundation. All rights reserved.
+// Licensed under the Apache License, Version 2.0. See License.txt in the project root for license information.
+
 using Microsoft.Extensions.Logging;
 using Microsoft.Extensions.Logging.Testing;