diff --git a/packages/react-router/src/router.ts b/packages/react-router/src/router.ts
index 9b2837740b..a073ad466e 100644
--- a/packages/react-router/src/router.ts
+++ b/packages/react-router/src/router.ts
@@ -811,7 +811,7 @@ export class Router<
     if (typeof document !== 'undefined') {
       ;(window as any).__TSR__ROUTER__ = this
       this.streamedKeys = new Set<string>(
-        Object.keys(window!.__TSR__?.streamedValues || {}),
+        Object.keys(window.__TSR__?.streamedValues || {}),
       )
     }