diff --git a/packages/next/client/router.ts b/packages/next/client/router.ts
index 14664a831f37b3d..dbcd11a9b2d6209 100644
--- a/packages/next/client/router.ts
+++ b/packages/next/client/router.ts
@@ -130,7 +130,7 @@ export default singletonRouter as SingletonRouter
 export { default as withRouter } from './with-router'
 
 export function useRouter(throwOnMissing: true): NextRouter
-export function useRouter(): NextRouter | null
+export function useRouter(): NextRouter
 export function useRouter(throwOnMissing?: boolean) {
   const router = React.useContext(RouterContext)
   if (!router && throwOnMissing) {