diff --git a/src/infra/provider-usage.auth.normalizes-keys.test.ts b/src/infra/provider-usage.auth.normalizes-keys.test.ts
index 0309a63c7f6..27d52b418cd 100644
--- a/src/infra/provider-usage.auth.normalizes-keys.test.ts
+++ b/src/infra/provider-usage.auth.normalizes-keys.test.ts
@@ -4,7 +4,7 @@ import path from "node:path";
 import { afterAll, beforeAll, beforeEach, describe, expect, it, vi } from "vitest";
 import { NON_ENV_SECRETREF_MARKER } from "../agents/model-auth-markers.js";
 
-const resolveProviderUsageAuthWithPluginMock = vi.fn(async () => null);
+const resolveProviderUsageAuthWithPluginMock = vi.fn(async (..._args: unknown[]) => null);
 
 vi.mock("../plugins/provider-runtime.js", () => ({
   resolveProviderUsageAuthWithPlugin: (...args: unknown[]) =>