diff --git a/src/mscorlib/corefx/System/Globalization/CalendricalCalculationsHelper.cs b/src/mscorlib/corefx/System/Globalization/CalendricalCalculationsHelper.cs
index fc5717c9a830..23558d89499e 100644
--- a/src/mscorlib/corefx/System/Globalization/CalendricalCalculationsHelper.cs
+++ b/src/mscorlib/corefx/System/Globalization/CalendricalCalculationsHelper.cs
@@ -1,8 +1,6 @@
-// ==++==
-//
-//   Copyright (c) Microsoft Corporation.  All rights reserved.
-//
-// ==--==
+// Copyright (c) Microsoft. All rights reserved.
+// Licensed under the MIT license. See LICENSE file in the project root for full license information.
+
 namespace System.Globalization
 {
     using System;
diff --git a/src/mscorlib/src/System/AppContext/AppContextSwitches.cs b/src/mscorlib/src/System/AppContext/AppContextSwitches.cs
index 0cfd2aef0dca..3a1d7e00f5db 100644
--- a/src/mscorlib/src/System/AppContext/AppContextSwitches.cs
+++ b/src/mscorlib/src/System/AppContext/AppContextSwitches.cs
@@ -1,8 +1,5 @@
-// ==++==
-// 
-//   Copyright (c) Microsoft Corporation.  All rights reserved.
-// 
-// ==--==
+// Copyright (c) Microsoft. All rights reserved. 
+// Licensed under the MIT license. See LICENSE file in the project root for full license information. 
 
 namespace System
 {
diff --git a/src/mscorlib/src/System/FormattableString.cs b/src/mscorlib/src/System/FormattableString.cs
index c08054f3dcd4..420421b44a98 100644
--- a/src/mscorlib/src/System/FormattableString.cs
+++ b/src/mscorlib/src/System/FormattableString.cs
@@ -1,8 +1,6 @@
-// ==++==
-// 
-//   Copyright (c) Microsoft Corporation.  All rights reserved.
-// 
-// ==--==
+// Copyright (c) Microsoft. All rights reserved. 
+// Licensed under the MIT license. See LICENSE file in the project root for full license information. 
+
 /*============================================================
 **
 ** Class:  FormattableString
diff --git a/src/mscorlib/src/System/Globalization/CalendricalCalculationsHelper.cs b/src/mscorlib/src/System/Globalization/CalendricalCalculationsHelper.cs
index fc5717c9a830..0280a17dde94 100644
--- a/src/mscorlib/src/System/Globalization/CalendricalCalculationsHelper.cs
+++ b/src/mscorlib/src/System/Globalization/CalendricalCalculationsHelper.cs
@@ -1,8 +1,6 @@
-// ==++==
-//
-//   Copyright (c) Microsoft Corporation.  All rights reserved.
-//
-// ==--==
+// Copyright (c) Microsoft. All rights reserved. 
+// Licensed under the MIT license. See LICENSE file in the project root for full license information. 
+
 namespace System.Globalization
 {
     using System;
diff --git a/src/mscorlib/src/System/Runtime/CompilerServices/FormattableStringFactory.cs b/src/mscorlib/src/System/Runtime/CompilerServices/FormattableStringFactory.cs
index 76582b6281b4..990204cbc05a 100644
--- a/src/mscorlib/src/System/Runtime/CompilerServices/FormattableStringFactory.cs
+++ b/src/mscorlib/src/System/Runtime/CompilerServices/FormattableStringFactory.cs
@@ -1,8 +1,6 @@
-// ==++==
-// 
-//   Copyright (c) Microsoft Corporation.  All rights reserved.
-// 
-// ==--==
+// Copyright (c) Microsoft. All rights reserved. 
+// Licensed under the MIT license. See LICENSE file in the project root for full license information. 
+
 /*============================================================
 **
 ** Class:  FormattableStringFactory