diff --git a/test/parallel/test-https-set-timeout-server.js b/test/parallel/test-https-set-timeout-server.js
index b5cc8a6f5a2664..e353f0afde5a92 100644
--- a/test/parallel/test-https-set-timeout-server.js
+++ b/test/parallel/test-https-set-timeout-server.js
@@ -26,7 +26,7 @@ if (!common.hasCrypto)
   common.skip('missing crypto');
 
 const assert = require('assert');
-const fs = require('fs');
+const fixtures = require('../common/fixtures');
 const https = require('https');
 const http = require('http');
 const tls = require('tls');
@@ -34,8 +34,8 @@ const tls = require('tls');
 const tests = [];
 
 const serverOptions = {
-  key: fs.readFileSync(`${common.fixturesDir}/keys/agent1-key.pem`),
-  cert: fs.readFileSync(`${common.fixturesDir}/keys/agent1-cert.pem`)
+  key: fixtures.readKey('agent1-key.pem'),
+  cert: fixtures.readKey('agent1-cert.pem')
 };
 
 function test(fn) {