diff --git a/src/Curl/Curl.php b/src/Curl/Curl.php
index a862a8d..5f4b22f 100644
--- a/src/Curl/Curl.php
+++ b/src/Curl/Curl.php
@@ -5,7 +5,6 @@ namespace Curl;
 use Curl\ArrayUtil;
 use Curl\Url;
 
-#[\AllowDynamicProperties]
 class Curl
 {
     const VERSION = '9.12.5';
@@ -96,6 +95,14 @@ class Curl
         's', 't', 'u', 'v', 'w', 'x', 'y', 'z', '{', '|', '}', '~',
     ];
 
+    public $curlErrorCodeConstant;
+    public $curlErrorCodeConstants;
+    public $curlOptionCodeConstants;
+    public $effectiveUrl;
+    public $rfc2616;
+    public $rfc6265;
+    public $totalTime;
+
     private static $deferredProperties = [
         'curlErrorCodeConstant',
         'curlErrorCodeConstants',
@@ -119,6 +126,14 @@ class Curl
             throw new \ErrorException('cURL library is not loaded');
         }
 
+        unset($this->curlErrorCodeConstant);
+        unset($this->curlErrorCodeConstants);
+        unset($this->curlOptionCodeConstants);
+        unset($this->effectiveUrl);
+        unset($this->rfc2616);
+        unset($this->rfc6265);
+        unset($this->totalTime);
+
         $this->curl = curl_init();
         $this->initialize($base_url, $options);
     }
diff --git a/tests/PHPCurlClass/PHPMultiCurlClassTest.php b/tests/PHPCurlClass/PHPMultiCurlClassTest.php
index 9ec5cc7..0260e39 100644
--- a/tests/PHPCurlClass/PHPMultiCurlClassTest.php
+++ b/tests/PHPCurlClass/PHPMultiCurlClassTest.php
@@ -84,7 +84,7 @@ class MultiCurlTest extends \PHPUnit\Framework\TestCase
                 \PHPUnit\Framework\Assert::assertFalse($delete_complete_called);
                 $delete_before_send_called = true;
             }
-            if (isset($instance->download)) {
+            if ($instance->downloadFileName !== null) {
                 \PHPUnit\Framework\Assert::assertFalse($download_before_send_called);
                 \PHPUnit\Framework\Assert::assertFalse($download_success_called);
                 \PHPUnit\Framework\Assert::assertFalse($download_error_called);
@@ -161,7 +161,7 @@ class MultiCurlTest extends \PHPUnit\Framework\TestCase
                 \PHPUnit\Framework\Assert::assertFalse($delete_complete_called);
                 $delete_success_called = true;
             }
-            if (isset($instance->download)) {
+            if ($instance->downloadFileName !== null) {
                 \PHPUnit\Framework\Assert::assertTrue($download_before_send_called);
                 \PHPUnit\Framework\Assert::assertFalse($download_success_called);
                 \PHPUnit\Framework\Assert::assertFalse($download_error_called);
@@ -259,7 +259,7 @@ class MultiCurlTest extends \PHPUnit\Framework\TestCase
                 \PHPUnit\Framework\Assert::assertFalse($delete_complete_called);
                 $delete_complete_called = true;
             }
-            if (isset($instance->download)) {
+            if ($instance->downloadFileName !== null) {
                 \PHPUnit\Framework\Assert::assertTrue($download_before_send_called);
                 \PHPUnit\Framework\Assert::assertTrue($download_success_called);
                 \PHPUnit\Framework\Assert::assertFalse($download_error_called);
@@ -318,7 +318,7 @@ class MultiCurlTest extends \PHPUnit\Framework\TestCase
 
         $multi_curl->addDelete(Test::TEST_URL);
         $download_file_path = tempnam('/tmp', 'php-curl-class.');
-        $multi_curl->addDownload(Test::TEST_URL, $download_file_path)->download = true;
+        $multi_curl->addDownload(Test::TEST_URL, $download_file_path);
         $multi_curl->addGet(Test::TEST_URL);
         $multi_curl->addHead(Test::TEST_URL);
         $multi_curl->addOptions(Test::TEST_URL);
@@ -448,7 +448,7 @@ class MultiCurlTest extends \PHPUnit\Framework\TestCase
                 \PHPUnit\Framework\Assert::assertFalse($delete_complete_called);
                 $delete_before_send_called = true;
             }
-            if (isset($instance->download)) {
+            if ($instance->downloadFileName !== null) {
                 \PHPUnit\Framework\Assert::assertFalse($download_before_send_called);
                 \PHPUnit\Framework\Assert::assertFalse($download_success_called);
                 \PHPUnit\Framework\Assert::assertFalse($download_error_called);
@@ -545,7 +545,7 @@ class MultiCurlTest extends \PHPUnit\Framework\TestCase
                 \PHPUnit\Framework\Assert::assertFalse($delete_complete_called);
                 $delete_error_called = true;
             }
-            if (isset($instance->download)) {
+            if ($instance->downloadFileName !== null) {
                 \PHPUnit\Framework\Assert::assertTrue($download_before_send_called);
                 \PHPUnit\Framework\Assert::assertFalse($download_success_called);
                 \PHPUnit\Framework\Assert::assertFalse($download_error_called);
@@ -622,7 +622,7 @@ class MultiCurlTest extends \PHPUnit\Framework\TestCase
                 \PHPUnit\Framework\Assert::assertFalse($delete_complete_called);
                 $delete_complete_called = true;
             }
-            if (isset($instance->download)) {
+            if ($instance->downloadFileName !== null) {
                 \PHPUnit\Framework\Assert::assertTrue($download_before_send_called);
                 \PHPUnit\Framework\Assert::assertFalse($download_success_called);
                 \PHPUnit\Framework\Assert::assertTrue($download_error_called);
@@ -694,7 +694,7 @@ class MultiCurlTest extends \PHPUnit\Framework\TestCase
 
         $multi_curl->addDelete(Test::ERROR_URL);
         $download_file_path = tempnam('/tmp', 'php-curl-class.');
-        $multi_curl->addDownload(Test::ERROR_URL, $download_file_path)->download = true;
+        $multi_curl->addDownload(Test::ERROR_URL, $download_file_path);
         $multi_curl->addGet(Test::ERROR_URL);
         $multi_curl->addHead(Test::ERROR_URL);
         $multi_curl->addOptions(Test::ERROR_URL);