diff --git a/src/util/isScheduler.ts b/src/util/isScheduler.ts
index 44f9d3fec5..6a05b57b38 100644
--- a/src/util/isScheduler.ts
+++ b/src/util/isScheduler.ts
@@ -1,4 +1,4 @@
 import { Scheduler } from '../Scheduler';
-export function isScheduler<T>(value: any): value is Scheduler {
+export function isScheduler(value: any): value is Scheduler {
   return value && typeof (<any>value).schedule === 'function';
 }
diff --git a/src/util/root.ts b/src/util/root.ts
index 0c0a3c3951..e5b4d1c3b1 100644
--- a/src/util/root.ts
+++ b/src/util/root.ts
@@ -1,6 +1,4 @@
 declare let global: NodeJS.Global;
-declare let module: any;
-declare let exports: any;
 
 declare module NodeJS {
   interface Global {