diff --git a/test/index.tsx b/test/index.tsx
index c355c52..db9d0c1 100644
--- a/test/index.tsx
+++ b/test/index.tsx
@@ -3,7 +3,7 @@ import { createRoot } from 'react-dom/client';
 
 import Test from './Test.js';
 
-createRoot(document.getElementById('react-root') as HTMLDivElement).render(
+createRoot(document.getElementById('react-root')!).render(
   <StrictMode>
     <Test />
   </StrictMode>,