diff --git a/test-support/unsafe-test-value.ts b/test-support/unsafe-test-value.ts
index b5fb2c6d2..faccd312e 100644
--- a/test-support/unsafe-test-value.ts
+++ b/test-support/unsafe-test-value.ts
@@ -1,5 +1,5 @@
 export function unsafeTestValue<TValue extends PropertyKey>(value: TValue): TValue
-export function unsafeTestValue<TValue = any>(value: unknown): TValue
-export function unsafeTestValue<TValue = any>(value: unknown): TValue {
+export function unsafeTestValue<TValue>(value: unknown): TValue
+export function unsafeTestValue<TValue>(value: unknown): TValue {
   return value as TValue
 }