diff --git a/tests/PHPCurlClass/Helper.php b/tests/PHPCurlClass/Helper.php
index 68ca777..f728f47 100644
--- a/tests/PHPCurlClass/Helper.php
+++ b/tests/PHPCurlClass/Helper.php
@@ -9,8 +9,11 @@ class Test
     const TEST_URL = 'http://127.0.0.1:8000/';
     const ERROR_URL = 'http://1.2.3.4/';
 
-    public function __construct()
+    private $testUrl;
+
+    public function __construct($port = null)
     {
+        $this->testUrl = $port === null ? self::TEST_URL : $this->getTestUrl($port);
         $this->curl = new Curl();
         $this->curl->setOpt(CURLOPT_SSL_VERIFYPEER, false);
         $this->curl->setOpt(CURLOPT_SSL_VERIFYHOST, false);
@@ -21,11 +24,11 @@ class Test
         $this->curl->setHeader('X-DEBUG-TEST', $test);
         $request_method = strtolower($request_method);
         if ($arg1 !== null && $arg2 !== null) {
-            $this->curl->$request_method(self::TEST_URL, $arg1, $arg2);
+            $this->curl->$request_method($this->testUrl, $arg1, $arg2);
         } elseif ($arg1 !== null) {
-            $this->curl->$request_method(self::TEST_URL, $arg1);
+            $this->curl->$request_method($this->testUrl, $arg1);
         } else {
-            $this->curl->$request_method(self::TEST_URL);
+            $this->curl->$request_method($this->testUrl);
         }
         return $this->curl->response;
     }
diff --git a/tests/PHPCurlClass/PHPCurlClassTest.php b/tests/PHPCurlClass/PHPCurlClassTest.php
index 9b11cfd..0658d92 100644
--- a/tests/PHPCurlClass/PHPCurlClassTest.php
+++ b/tests/PHPCurlClass/PHPCurlClassTest.php
@@ -1133,7 +1133,7 @@ class CurlTest extends \PHPUnit\Framework\TestCase
 
     public function testDefaultTimeout()
     {
-        $test = new Test();
+        $test = new Test('8001');
         $test->server('timeout', 'GET', array(
             'seconds' => '31',
         ));
@@ -1146,7 +1146,7 @@ class CurlTest extends \PHPUnit\Framework\TestCase
 
     public function testTimeoutError()
     {
-        $test = new Test();
+        $test = new Test('8002');
         $test->curl->setTimeout(5);
         $test->server('timeout', 'GET', array(
             'seconds' => '10',
@@ -1160,7 +1160,7 @@ class CurlTest extends \PHPUnit\Framework\TestCase
 
     public function testTimeout()
     {
-        $test = new Test();
+        $test = new Test('8003');
         $test->curl->verbose();
         $test->curl->setTimeout(10);
         $test->server('timeout_legacy', 'GET', array(
@@ -1185,7 +1185,7 @@ class CurlTest extends \PHPUnit\Framework\TestCase
 
     public function testError()
     {
-        $test = new Test();
+        $test = new Test('8004');
         $test->curl->get(Test::ERROR_URL);
         $this->assertTrue($test->curl->error);
         $this->assertTrue($test->curl->curlError);