diff --git a/typescript-services/typescriptServices.d.ts b/typescript-services/typescriptServices.d.ts
index c099e0958..18bef7b3d 100644
--- a/typescript-services/typescriptServices.d.ts
+++ b/typescript-services/typescriptServices.d.ts
@@ -1,3 +1,8 @@
+// Type definitions for TypeScript-Services
+// Project: https://www.npmjs.org/package/typescript-services
+// Definitions by: Basarat Ali Syed <http://github.com/basarat>
+// Definitions: https://github.com/borisyankov/DefinitelyTyped
+
 declare module TypeScript {
     var DiagnosticCode: {
         error_TS_0_1: string;