diff --git a/immutable/immutable.d.ts b/immutable/immutable.d.ts
index 5ca32ecfe4..86f23bc6e3 100644
--- a/immutable/immutable.d.ts
+++ b/immutable/immutable.d.ts
@@ -35,7 +35,7 @@
  * [ES6]: https://developer.mozilla.org/en-US/docs/Web/JavaScript/New_in_JavaScript/ECMAScript_6_support_in_Mozilla
  */
 
-declare namespace __Immutable {
+declare namespace Immutable {
 
   /**
    * Deeply converts plain JS objects and arrays to Immutable Maps and Lists.
@@ -2542,5 +2542,5 @@ declare namespace __Immutable {
 }
 
 declare module "immutable" {
-  export = __Immutable
+  export = Immutable;
 }