diff --git a/src/runtime/internal/dom.ts b/src/runtime/internal/dom.ts
index 26dc44b3dd..26af5cb6f3 100644
--- a/src/runtime/internal/dom.ts
+++ b/src/runtime/internal/dom.ts
@@ -1,4 +1,4 @@
-import { ResizeObserverSingleton } from './ResizeObserverSingleton.js';
+import { ResizeObserverSingleton } from './ResizeObserverSingleton';
 import { has_prop } from './utils';
 
 // Track which nodes are claimed during hydration. Unclaimed nodes can then be removed from the DOM