diff --git a/src/room/InCallView.test.tsx b/src/room/InCallView.test.tsx
index 9d81fa67..5748397a 100644
--- a/src/room/InCallView.test.tsx
+++ b/src/room/InCallView.test.tsx
@@ -130,7 +130,7 @@ function createInCallView(args: CreateInCallViewArgs = {}): RenderResult & {
   const client = room.client;
 
   const Router = args.initialRoute
-    ? ({ children }: { children: React.ReactNode }) => (
+    ? ({ children }: { children: React.ReactNode }): React.ReactNode => (
         <MemoryRouter initialEntries={[args.initialRoute!]}>
           {children}
         </MemoryRouter>