diff --git a/sinon-as-promised/sinon-as-promised-tests.ts b/sinon-as-promised/sinon-as-promised-tests.ts
index b835fe9952..10602a3e8d 100644
--- a/sinon-as-promised/sinon-as-promised-tests.ts
+++ b/sinon-as-promised/sinon-as-promised-tests.ts
@@ -1,11 +1,11 @@
 /// <reference types="sinon"/>
 
 function testResolve() {
-    Sinon.stub().resolves('test val');
+    sinon.stub().resolves('test val');
 }
 
 function testReject() {
-    Sinon.stub().rejects('test val');
+    sinon.stub().rejects('test val');
 }
 
 testResolve();
diff --git a/sinon/index.d.ts b/sinon/index.d.ts
index a00a86c40c..bcea91929f 100644
--- a/sinon/index.d.ts
+++ b/sinon/index.d.ts
@@ -437,4 +437,4 @@ declare namespace Sinon {
 declare var Sinon: Sinon.SinonStatic;
 
 export = Sinon;
-export as namespace Sinon;
+export as namespace sinon;