diff --git a/headless/index.js b/headless/index.js
index 7ee0fe16d..de576c497 100644
--- a/headless/index.js
+++ b/headless/index.js
@@ -17,7 +17,7 @@ import {
   exportMetricsWithoutTrace,
   exportMetricsFromTrace,
 } from '../src/utils/exportMetrics.tsx';
-import {listDevices} from '../src/utils/listDevices';
+import {listDevices} from '../src/utils/listDevices.tsx';
 // $FlowFixMe this file exist, trust me, flow!
 import setup from '../static/setup.js';
 import type {Store} from '../src/reducers/index.tsx';
diff --git a/src/utils/listDevices.js b/src/utils/listDevices.tsx
similarity index 77%
rename from src/utils/listDevices.js
rename to src/utils/listDevices.tsx
index c8c748158..744e8b3c7 100644
--- a/src/utils/listDevices.js
+++ b/src/utils/listDevices.tsx
@@ -4,12 +4,12 @@
  * LICENSE file in the root directory of this source tree.
  * @format
  */
-import {getActiveAndroidDevices} from '../dispatcher/androidDevice.tsx';
-import {getActiveDevicesAndSimulators} from '../dispatcher/iOSDevice.tsx';
-import type BaseDevice from '../devices/BaseDevice.tsx';
+import {getActiveAndroidDevices} from '../dispatcher/androidDevice';
+import {getActiveDevicesAndSimulators} from '../dispatcher/iOSDevice';
+import BaseDevice from '../devices/BaseDevice';
 
 export async function listDevices(): Promise<Array<BaseDevice>> {
   const androidDevices = await getActiveAndroidDevices();
-  const iOSDevices = await getActiveDevicesAndSimulators();
+  const iOSDevices: BaseDevice[] = await getActiveDevicesAndSimulators();
   return iOSDevices.concat(androidDevices);
 }