diff --git a/test/parallel/test-https-agent-secure-protocol.js b/test/parallel/test-https-agent-secure-protocol.js
index 4839dd7c460d6a..4963b55febe345 100644
--- a/test/parallel/test-https-agent-secure-protocol.js
+++ b/test/parallel/test-https-agent-secure-protocol.js
@@ -5,12 +5,12 @@ if (!common.hasCrypto)
 
 const assert = require('assert');
 const https = require('https');
-const fs = require('fs');
+const fixtures = require('../common/fixtures');
 
 const options = {
-  key: fs.readFileSync(`${common.fixturesDir}/keys/agent1-key.pem`),
-  cert: fs.readFileSync(`${common.fixturesDir}/keys/agent1-cert.pem`),
-  ca: fs.readFileSync(`${common.fixturesDir}/keys/ca1-cert.pem`)
+  key: fixtures.readKey('agent1-key.pem'),
+  cert: fixtures.readKey('agent1-cert.pem'),
+  ca: fixtures.readKey('ca1-cert.pem')
 };
 
 const server = https.Server(options, function(req, res) {