diff --git a/.gitignore b/.gitignore
index 8a282a5..da0f27b 100644
--- a/.gitignore
+++ b/.gitignore
@@ -1,3 +1,4 @@
+/.idea
 /vendor
 composer.lock
 composer.phar
diff --git a/src/Message/CompletePurchaseRequest.php b/src/Message/CompletePurchaseRequest.php
index b3dc543..0dfde52 100644
--- a/src/Message/CompletePurchaseRequest.php
+++ b/src/Message/CompletePurchaseRequest.php
@@ -11,7 +11,7 @@ class CompletePurchaseRequest extends AbstractRequest
 {
     public function getData()
     {
-        $this->validate('websiteKey', 'secretKey', 'amount');
+        $this->validate('websiteKey', 'secretKey');
 
         $originalData = $this->httpRequest->request->all();
         $data = array_change_key_case($originalData, CASE_UPPER);