diff --git a/src/Resources/Recurring.php b/src/Resources/Recurring.php
index 28bd4b2d..413db441 100644
--- a/src/Resources/Recurring.php
+++ b/src/Resources/Recurring.php
@@ -39,7 +39,7 @@ class Recurring extends AbstractHeidelpayResource
     /** @var string $returnUrl */
     protected $returnUrl;
 
-    /** @var string $redirectUrl */
+    /** @var string|null $redirectUrl */
     protected $redirectUrl;
 
     /** @var string $paymentTypeId */
@@ -96,19 +96,19 @@ public function setPaymentTypeId(string $paymentTypeId): Recurring
     }
 
     /**
-     * @return string
+     * @return string|null
      */
-    public function getRedirectUrl(): string
+    public function getRedirectUrl()
     {
         return $this->redirectUrl;
     }
 
     /**
-     * @param string $redirectUrl
+     * @param string|null $redirectUrl
      *
      * @return Recurring
      */
-    protected function setRedirectUrl(string $redirectUrl): Recurring
+    protected function setRedirectUrl($redirectUrl): Recurring
     {
         $this->redirectUrl = $redirectUrl;
         return $this;
diff --git a/src/Services/EnvironmentService.php b/src/Services/EnvironmentService.php
index 1d9d7356..8cd265f9 100755
--- a/src/Services/EnvironmentService.php
+++ b/src/Services/EnvironmentService.php
@@ -80,23 +80,29 @@ public static function getTimeout(): int
      * Returns the private key string set via environment variable.
      * Returns the default key if the environment variable is not set.
      *
+     * @param bool $non3ds
+     *
      * @return string
      */
-    public function getTestPrivateKey(): string
+    public function getTestPrivateKey($non3ds = false): string
     {
-        $key = $_SERVER[self::ENV_VAR_TEST_PRIVATE_KEY] ?? '';
-        return empty($key) ? self::DEFAULT_TEST_PRIVATE_KEY : $key;
+        $variableName = self::ENV_VAR_TEST_PRIVATE_KEY . ($non3ds ? '_NON_3DS' : '');
+        $key = $_SERVER[$variableName] ?? '';
+        return empty($key) && !$non3ds ? self::DEFAULT_TEST_PRIVATE_KEY : $key;
     }
 
     /**
      * Returns the public key string set via environment variable.
      * Returns the default key if the environment variable is not set.
      *
+     * @param bool $non3ds
+     *
      * @return string
      */
-    public function getTestPublicKey(): string
+    public function getTestPublicKey($non3ds = false): string
     {
-        $key = $_SERVER[self::ENV_VAR_TEST_PUBLIC_KEY] ?? '';
-        return empty($key) ? self::DEFAULT_TEST_PUBLIC_KEY : $key;
+        $variableName = self::ENV_VAR_TEST_PUBLIC_KEY . ($non3ds ? '_NON_3DS' : '');
+        $key = $_SERVER[$variableName] ?? '';
+        return empty($key) && !$non3ds ? self::DEFAULT_TEST_PUBLIC_KEY : $key;
     }
 }
diff --git a/test/BasePaymentTest.php b/test/BasePaymentTest.php
index 34faf0af..bbdc8e3a 100755
--- a/test/BasePaymentTest.php
+++ b/test/BasePaymentTest.php
@@ -129,11 +129,11 @@ public function assertTransactionResourceHasBeenCreated($transactionType)
     /**
      * Asserts whether the given transaction was successful.
      *
-     * @param AbstractTransactionType $transaction
+     * @param AbstractTransactionType|Recurring $transaction
      *
      * @throws AssertionFailedError
      */
-    protected function assertSuccess(AbstractTransactionType $transaction)
+    protected function assertSuccess($transaction)
     {
         $this->assertTrue($transaction->isSuccess());
         $this->assertFalse($transaction->isPending());
@@ -143,11 +143,11 @@ protected function assertSuccess(AbstractTransactionType $transaction)
     /**
      * Asserts whether the given transaction was a failure.
      *
-     * @param AbstractTransactionType $transaction
+     * @param AbstractTransactionType|Recurring $transaction
      *
      * @throws AssertionFailedError
      */
-    protected function assertError(AbstractTransactionType $transaction)
+    protected function assertError($transaction)
     {
         $this->assertFalse($transaction->isSuccess());
         $this->assertFalse($transaction->isPending());
diff --git a/test/integration/RecurringPaymentTest.php b/test/integration/RecurringPaymentTest.php
index 5be3f1c2..e1661996 100644
--- a/test/integration/RecurringPaymentTest.php
+++ b/test/integration/RecurringPaymentTest.php
@@ -26,10 +26,12 @@
 
 use heidelpayPHP\Constants\ApiResponseCodes;
 use heidelpayPHP\Exceptions\HeidelpayApiException;
+use heidelpayPHP\Heidelpay;
 use heidelpayPHP\Resources\PaymentTypes\Card;
 use heidelpayPHP\Resources\PaymentTypes\Paypal;
 use heidelpayPHP\Resources\PaymentTypes\SepaDirectDebit;
 use heidelpayPHP\Resources\PaymentTypes\SepaDirectDebitGuaranteed;
+use heidelpayPHP\Services\EnvironmentService;
 use heidelpayPHP\test\BasePaymentTest;
 use PHPUnit\Framework\Exception;
 use RuntimeException;
@@ -83,20 +85,26 @@ public function recurringForCardWith3dsShouldReturnAttributes()
      *
      * @throws HeidelpayApiException A HeidelpayApiException is thrown if there is an error returned on API-request.
      * @throws RuntimeException      A RuntimeException is thrown when there is an error while using the SDK.
-     *
-     * @group skip
      */
     public function recurringForCardWithout3dsShouldActivateRecurringAtOnce()
     {
+        $privateKey = (new EnvironmentService())->getTestPrivateKey(true);
+        if (empty($privateKey)) {
+            $this->markTestIncomplete('No non 3ds private key set');
+        }
+        $heidelpay = new Heidelpay($privateKey);
+
+        $heidelpay->setDebugMode(true)->setDebugHandler($this->heidelpay->getDebugHandler());
+
         /** @var Card $card */
-        $card = $this->heidelpay->createPaymentType($this->createCardObject()->set3ds(false));
+        $card = $heidelpay->createPaymentType($this->createCardObject()->set3ds(false));
         $this->assertFalse($card->isRecurring());
 
         $recurring = $card->activateRecurring('https://dev.heidelpay.com');
-        $this->assertPending($recurring);
+        $this->assertSuccess($recurring);
 
         /** @var Card $fetchedCard */
-        $fetchedCard = $this->heidelpay->fetchPaymentType($card->getId());
+        $fetchedCard = $heidelpay->fetchPaymentType($card->getId());
         $this->assertTrue($fetchedCard->isRecurring());
     }