diff --git a/src/Message/PaymentIntents/AuthorizeRequest.php b/src/Message/PaymentIntents/AuthorizeRequest.php
index 4a0ec8ad..5a44bad9 100644
--- a/src/Message/PaymentIntents/AuthorizeRequest.php
+++ b/src/Message/PaymentIntents/AuthorizeRequest.php
@@ -355,7 +355,7 @@ public function getData()
         }
 
         if ($this->getApplicationFee()) {
-            $data['application_fee'] = $this->getApplicationFeeInteger();
+            $data['application_fee_amount'] = $this->getApplicationFeeInteger();
         }
 
         if ($this->getTransferGroup()) {
diff --git a/tests/Message/PaymentIntents/AuthorizeRequestTest.php b/tests/Message/PaymentIntents/AuthorizeRequestTest.php
index 5081eb01..28344ad5 100644
--- a/tests/Message/PaymentIntents/AuthorizeRequestTest.php
+++ b/tests/Message/PaymentIntents/AuthorizeRequestTest.php
@@ -43,7 +43,7 @@ public function testGetData()
         $this->assertSame('manual', $data['confirmation_method']);
         $this->assertSame('pm_valid_payment_method', $data['payment_method']);
         $this->assertSame(array('foo' => 'bar'), $data['metadata']);
-        $this->assertSame(100, $data['application_fee']);
+        $this->assertSame(100, $data['application_fee_amount']);
         $this->assertSame('off_session', $data['setup_future_usage']);
         $this->assertSame('false', $data['off_session']);
     }
diff --git a/tests/Message/PaymentIntents/PurchaseRequestTest.php b/tests/Message/PaymentIntents/PurchaseRequestTest.php
index 09af7fae..2f0dda5d 100644
--- a/tests/Message/PaymentIntents/PurchaseRequestTest.php
+++ b/tests/Message/PaymentIntents/PurchaseRequestTest.php
@@ -39,7 +39,7 @@ public function testGetData()
         $this->assertSame('manual', $data['confirmation_method']);
         $this->assertSame('pm_valid_payment_method', $data['payment_method']);
         $this->assertSame(array('foo' => 'bar'), $data['metadata']);
-        $this->assertSame(100, $data['application_fee']);
+        $this->assertSame(100, $data['application_fee_amount']);
     }
 
     public function testSendSuccessAndRequireConfirmation()