diff --git a/src/frontend/ui/popup/app.tsx b/src/frontend/ui/popup/app.tsx
index f774429..e0e1cfa 100644
--- a/src/frontend/ui/popup/app.tsx
+++ b/src/frontend/ui/popup/app.tsx
@@ -126,6 +126,3 @@ export const App: Component = ({ state, toggleWhitelist }) => {
     </div>
   )
 }
-function getAppContrast(whitelisted: boolean, color: string) {
-  throw new Error('Function not implemented.')
-}