diff --git a/lib/Subscription/CaptchaSession.php b/lib/Subscription/CaptchaSession.php
index 8fe12de1f1..b1cd634afe 100644
--- a/lib/Subscription/CaptchaSession.php
+++ b/lib/Subscription/CaptchaSession.php
@@ -6,7 +6,7 @@ use MailPoet\Config\Session;
 use MailPoet\WP\Functions as WPFunctions;
 
 class CaptchaSession {
-  const EXPIRATION = 300; // 5 minutes
+  const EXPIRATION = 1800; // 30 minutes
 
   const SESSION_HASH_KEY = 'hash';
   const SESSION_FORM_KEY = 'form';
diff --git a/tests/integration/API/JSON/v1/SubscribersTest.php b/tests/integration/API/JSON/v1/SubscribersTest.php
index 5d0327ebfa..d309cff9f2 100644
--- a/tests/integration/API/JSON/v1/SubscribersTest.php
+++ b/tests/integration/API/JSON/v1/SubscribersTest.php
@@ -545,7 +545,7 @@ class SubscribersTest extends \MailPoetTest {
     $subscriber->count_confirmations = 1;
     $subscriber->save();
     $captcha_value = 'ihg5w';
-    $this->captcha_session->setCaptchaHash('ihg5w');
+    $this->captcha_session->setCaptchaHash($captcha_value);
     $response = $this->endpoint->subscribe([
       $this->obfuscatedEmail => $email,
       'form_id' => $this->form->id,