diff --git a/src/fb-stubs/Prefetcher.js b/src/fb-stubs/Prefetcher.tsx
similarity index 100%
rename from src/fb-stubs/Prefetcher.js
rename to src/fb-stubs/Prefetcher.tsx
diff --git a/src/init.js b/src/init.js
index a354559fb..a589f9f79 100644
--- a/src/init.js
+++ b/src/init.js
@@ -12,7 +12,7 @@ import GK from './fb-stubs/GK.tsx';
 import {init as initLogger} from './fb-stubs/Logger';
 import App from './App.js';
 import BugReporter from './fb-stubs/BugReporter.tsx';
-import setupPrefetcher from './fb-stubs/Prefetcher.js';
+import setupPrefetcher from './fb-stubs/Prefetcher.tsx';
 import {createStore} from 'redux';
 import {persistStore} from 'redux-persist';
 import reducers from './reducers/index.tsx';