diff --git a/src/logging/config.test.ts b/src/logging/config.test.ts
index f1a465e5cfe5..967013aa5b6d 100644
--- a/src/logging/config.test.ts
+++ b/src/logging/config.test.ts
@@ -3,10 +3,11 @@ import fs from "node:fs";
 import os from "node:os";
 import path from "node:path";
 import { afterEach, describe, expect, it } from "vitest";
+import { captureEnv } from "../test-utils/env.js";
 import { readLoggingConfig } from "./config.js";
 
 const originalArgv = process.argv;
-const originalConfigPath = process.env.OPENCLAW_CONFIG_PATH;
+const originalEnv = captureEnv(["OPENCLAW_CONFIG_PATH"]);
 let tempDirs: string[] = [];
 
 function writeConfig(source: string): string {
@@ -21,11 +22,7 @@ function writeConfig(source: string): string {
 describe("readLoggingConfig", () => {
   afterEach(() => {
     process.argv = originalArgv;
-    if (originalConfigPath === undefined) {
-      delete process.env.OPENCLAW_CONFIG_PATH;
-    } else {
-      process.env.OPENCLAW_CONFIG_PATH = originalConfigPath;
-    }
+    originalEnv.restore();
     for (const dir of tempDirs) {
       fs.rmSync(dir, { force: true, recursive: true });
     }