diff --git a/src/channels/channels-misc.test.ts b/src/channels/channels-misc.test.ts
index d1b1bbb022f..9582710bb26 100644
--- a/src/channels/channels-misc.test.ts
+++ b/src/channels/channels-misc.test.ts
@@ -1,6 +1,8 @@
 import { afterEach, describe, expect, it, vi } from "vitest";
 import { normalizeChatType } from "./chat-type.js";
 
+const readLazyString = (value: unknown): string => String(value);
+
 describe("normalizeChatType", () => {
   it.each([
     { name: "normalizes direct", value: "direct", expected: "direct" },
@@ -61,8 +63,8 @@ describe("WA_WEB_AUTH_DIR", () => {
     const webEntry = await import("./web/index.js");
 
     expect(resolveWebChannelAuthDir).not.toHaveBeenCalled();
-    expect(String(channelWeb.WA_WEB_AUTH_DIR)).toBe("/tmp/openclaw-whatsapp-auth");
-    expect(String(webEntry.WA_WEB_AUTH_DIR)).toBe("/tmp/openclaw-whatsapp-auth");
+    expect(readLazyString(channelWeb.WA_WEB_AUTH_DIR)).toBe("/tmp/openclaw-whatsapp-auth");
+    expect(readLazyString(webEntry.WA_WEB_AUTH_DIR)).toBe("/tmp/openclaw-whatsapp-auth");
     expect(resolveWebChannelAuthDir).toHaveBeenCalledTimes(1);
   });
 });