diff --git a/frontend/src/ts/test/funbox.ts b/frontend/src/ts/test/funbox.ts
index c3295d4c9..74de76932 100644
--- a/frontend/src/ts/test/funbox.ts
+++ b/frontend/src/ts/test/funbox.ts
@@ -88,7 +88,7 @@ export function reset(): void {
   resetMemoryTimer();
 }
 
-export function toggleScript(...params: any[]): void {
+export function toggleScript(...params: string[]): void {
   if (Config.funbox === "tts") {
     TTS.speak(params[0]);
   }