diff --git a/src/DataMapper/ResponseDataMapper/EstPosResponseDataMapper.php b/src/DataMapper/ResponseDataMapper/EstPosResponseDataMapper.php
index 3ba9800d..abe05bee 100644
--- a/src/DataMapper/ResponseDataMapper/EstPosResponseDataMapper.php
+++ b/src/DataMapper/ResponseDataMapper/EstPosResponseDataMapper.php
@@ -130,7 +130,7 @@ public function map3DPaymentData(array $raw3DAuthResponseData, ?array $rawPaymen
             'month'                => $raw3DAuthResponseData['Ecom_Payment_Card_ExpDate_Month'],
             'year'                 => $raw3DAuthResponseData['Ecom_Payment_Card_ExpDate_Year'],
             'amount'               => null !== $raw3DAuthResponseData['amount'] ? $this->formatAmount($raw3DAuthResponseData['amount']) : null,
-            'currency'             => $this->mapCurrency($raw3DAuthResponseData['currency']),
+            'currency'             => '*' === $raw3DAuthResponseData['currency'] ? null : $this->mapCurrency($raw3DAuthResponseData['currency']),
             'installment_count'    => $this->mapInstallment($raw3DAuthResponseData['taksit']),
             'eci'                  => null,
             'tx_status'            => null,
diff --git a/tests/Unit/DataMapper/ResponseDataMapper/EstPosResponseDataMapperTest.php b/tests/Unit/DataMapper/ResponseDataMapper/EstPosResponseDataMapperTest.php
index f1c1945d..e34cab14 100644
--- a/tests/Unit/DataMapper/ResponseDataMapper/EstPosResponseDataMapperTest.php
+++ b/tests/Unit/DataMapper/ResponseDataMapper/EstPosResponseDataMapperTest.php
@@ -546,7 +546,7 @@ public static function threeDPaymentDataProvider(): array
                     'auth_code'            => null,
                     'batch_num'            => null,
                     'cavv'                 => null,
-                    'currency'             => '*',
+                    'currency'             => null,
                     'eci'                  => null,
                     'error_code'           => 'HPP-1001',
                     'error_message'        => 'Girilen kart numarası doğru formatta değildir. Kart numarasını kontrol ederek tekrar işlem deneyiniz.',