diff --git a/README.md b/README.md
index d01a0f337..0b4c64b91 100644
--- a/README.md
+++ b/README.md
@@ -185,3 +185,5 @@ If you contribute code to this project, you are implicitly allowing your code to
 Copyright (c) 2017-2019, [The xterm.js authors](https://github.com/xtermjs/xterm.js/graphs/contributors) (MIT License)<br>
 Copyright (c) 2014-2017, SourceLair, Private Company ([www.sourcelair.com](https://www.sourcelair.com/home)) (MIT License)<br>
 Copyright (c) 2012-2013, Christopher Jeffrey (MIT License)
+
+Some files in this code base are heavily influenced on implementations in [Visual Studio Code](https://github.com/Microsoft/vscode) (MIT License).
diff --git a/src/common/services/InstantiationService.ts b/src/common/services/InstantiationService.ts
index fb846e7a8..98c23b6e4 100644
--- a/src/common/services/InstantiationService.ts
+++ b/src/common/services/InstantiationService.ts
@@ -1,7 +1,13 @@
 /**
  * Copyright (c) 2019 The xterm.js authors. All rights reserved.
  * @license MIT
+ *
+ * This was heavily inspired from microsoft/vscode's dependency injection system (MIT).
  */
+/*---------------------------------------------------------------------------------------------
+ *  Copyright (c) Microsoft Corporation. All rights reserved.
+ *  Licensed under the MIT License. See License.txt in the project root for license information.
+ *--------------------------------------------------------------------------------------------*/
 
 import { IInstantiationService, IServiceIdentifier } from 'common/services/Services';
 import { getServiceDependencies } from 'common/services/ServiceRegistry';
diff --git a/src/common/services/ServiceRegistry.ts b/src/common/services/ServiceRegistry.ts
index 2d7ed8113..450af4924 100644
--- a/src/common/services/ServiceRegistry.ts
+++ b/src/common/services/ServiceRegistry.ts
@@ -1,7 +1,13 @@
 /**
  * Copyright (c) 2019 The xterm.js authors. All rights reserved.
  * @license MIT
+ *
+ * This was heavily inspired from microsoft/vscode's dependency injection system (MIT).
  */
+/*---------------------------------------------------------------------------------------------
+ *  Copyright (c) Microsoft Corporation. All rights reserved.
+ *  Licensed under the MIT License. See License.txt in the project root for license information.
+ *--------------------------------------------------------------------------------------------*/
 
 import { IServiceIdentifier } from 'common/services/Services';