diff --git a/src/Collection/ProductCollection.php b/src/Collection/ProductCollection.php
index adac66b..07b5a63 100644
--- a/src/Collection/ProductCollection.php
+++ b/src/Collection/ProductCollection.php
@@ -15,6 +15,7 @@
 namespace WayForPay\SDK\Collection;
 
 use Easy\Collections\ArrayList;
+use InvalidArgumentException;
 use WayForPay\SDK\Contract\SignatureAbleInterface;
 use WayForPay\SDK\Domain\Product;
 
@@ -23,7 +24,7 @@ class ProductCollection extends ArrayList implements SignatureAbleInterface
     public function add($item)
     {
         if (!$item instanceof Product) {
-            throw new \InvalidArgumentException('Expect Product, got ' . get_class($item));
+            throw new InvalidArgumentException('Expect Product, got ' . get_class($item));
         }
 
         return parent::add($item);
diff --git a/src/Collection/TransactionHistoryCollection.php b/src/Collection/TransactionHistoryCollection.php
index 8131adf..fe33075 100644
--- a/src/Collection/TransactionHistoryCollection.php
+++ b/src/Collection/TransactionHistoryCollection.php
@@ -15,6 +15,7 @@
 namespace WayForPay\SDK\Collection;
 
 use Easy\Collections\ArrayList;
+use InvalidArgumentException;
 use WayForPay\SDK\Domain\TransactionHistory;
 
 class TransactionHistoryCollection extends ArrayList
@@ -22,7 +23,7 @@ class TransactionHistoryCollection extends ArrayList
     public function add($item)
     {
         if (!$item instanceof TransactionHistory) {
-            throw new \InvalidArgumentException('Expect Transaction, got ' . get_class($item));
+            throw new InvalidArgumentException('Expect Transaction, got ' . get_class($item));
         }
 
         return parent::add($item);
diff --git a/src/Domain/PaymentSystems.php b/src/Domain/PaymentSystems.php
index f108726..090a763 100644
--- a/src/Domain/PaymentSystems.php
+++ b/src/Domain/PaymentSystems.php
@@ -39,8 +39,8 @@ class PaymentSystems
 
     /**
      * PaymentSystems constructor.
+     * @param array $list
      * @param $default
-     * @param $list
      */
     public function __construct(array $list = array(), $default = null)
     {
diff --git a/src/Domain/Regular.php b/src/Domain/Regular.php
index bd2adcd..a420cb2 100644
--- a/src/Domain/Regular.php
+++ b/src/Domain/Regular.php
@@ -116,7 +116,7 @@ public function __construct(
     }
 
     /**
-     * @return mixed
+     * @return array
      */
     public function getModes()
     {
diff --git a/src/Form/PurchaseForm.php b/src/Form/PurchaseForm.php
index 4b89f20..aabd5ee 100644
--- a/src/Form/PurchaseForm.php
+++ b/src/Form/PurchaseForm.php
@@ -15,7 +15,6 @@
 namespace WayForPay\SDK\Form;
 
 use DateTime;
-use PFBC\Form;
 use WayForPay\SDK\Collection\ProductCollection;
 use WayForPay\SDK\Contract\EndpointInterface;
 use WayForPay\SDK\Credential\AccountSecretCredential;
@@ -320,7 +319,7 @@ public function getData()
     }
 
     /**
-     * @return EndpointInterface|ApiEndpoint
+     * @return EndpointInterface
      */
     public function getEndpoint()
     {
diff --git a/src/Request/ApiRequest.php b/src/Request/ApiRequest.php
index ad9a3d3..9b97bae 100644
--- a/src/Request/ApiRequest.php
+++ b/src/Request/ApiRequest.php
@@ -14,6 +14,7 @@
 
 namespace WayForPay\SDK\Request;
 
+use Exception;
 use WayForPay\SDK\Client\CurlRequestTransformer;
 use WayForPay\SDK\Contract\EndpointInterface;
 use WayForPay\SDK\Contract\RequestInterface;
@@ -134,7 +135,7 @@ public function send()
     {
         try {
             return $this->getTransformer()->transform($this);
-        } catch (\Exception $e) {
+        } catch (Exception $e) {
             throw new ApiException(new Reason(-1, $e->getMessage()));
         }
     }
@@ -144,7 +145,7 @@ abstract public function getResponseClass();
     /**
      * @param array $data
      * @return ResponseInterface
-     * @throws \Exception
+     * @throws Exception
      */
     public function getResponse(array $data)
     {
diff --git a/src/Response/SettleResponse.php b/src/Response/SettleResponse.php
index 815c958..ce727ea 100644
--- a/src/Response/SettleResponse.php
+++ b/src/Response/SettleResponse.php
@@ -15,8 +15,6 @@
 namespace WayForPay\SDK\Response;
 
 use WayForPay\SDK\Domain\Transaction;
-use WayForPay\SDK\Domain\TransactionBase;
-use WayForPay\SDK\Domain\TransactionService;
 use WayForPay\SDK\Domain\TransactionSettle;
 
 /**
diff --git a/src/Response/TransactionListResponse.php b/src/Response/TransactionListResponse.php
index 105dbc9..d0f3f7a 100644
--- a/src/Response/TransactionListResponse.php
+++ b/src/Response/TransactionListResponse.php
@@ -22,7 +22,7 @@
 class TransactionListResponse extends Response
 {
     /**
-     * @var ArrayList
+     * @var TransactionHistoryCollection|Transaction[]
      */
     private $transactionList;
 
diff --git a/src/Response/V2/TransactionListResponseV2.php b/src/Response/V2/TransactionListResponseV2.php
index 4e00e4a..0b98ab2 100644
--- a/src/Response/V2/TransactionListResponseV2.php
+++ b/src/Response/V2/TransactionListResponseV2.php
@@ -22,7 +22,7 @@
 class TransactionListResponseV2 extends TransactionListResponse
 {
     /**
-     * @var ArrayList
+     * @var TransactionHistoryCollection|TransactionHistoryV2
      */
     private $transactionList;
 
diff --git a/src/Wizard/BaseWizard.php b/src/Wizard/BaseWizard.php
index 5f8a199..fbef735 100644
--- a/src/Wizard/BaseWizard.php
+++ b/src/Wizard/BaseWizard.php
@@ -14,12 +14,14 @@
 
 namespace WayForPay\SDK\Wizard;
 
+use InvalidArgumentException;
+
 abstract class BaseWizard
 {
     protected $propertyRequired = array();
 
     /**
-     * @throws \InvalidArgumentException
+     * @throws InvalidArgumentException
      */
     protected function check()
     {
@@ -34,7 +36,7 @@ protected function check()
         }
 
         if ($missed) {
-            throw new \InvalidArgumentException(
+            throw new InvalidArgumentException(
                 'Some arguments missed: ' . implode(', ', $missed) .
                 '. Check next methods are called: ' . PHP_EOL . PHP_EOL . implode(PHP_EOL, $calls)
             );
diff --git a/src/Wizard/InvoiceWizard.php b/src/Wizard/InvoiceWizard.php
index ce6bb3d..27d5008 100644
--- a/src/Wizard/InvoiceWizard.php
+++ b/src/Wizard/InvoiceWizard.php
@@ -14,7 +14,11 @@
 
 namespace WayForPay\SDK\Wizard;
 
+use DateTime;
+use WayForPay\SDK\Collection\ProductCollection;
 use WayForPay\SDK\Credential\AccountSecretCredential;
+use WayForPay\SDK\Domain\Client;
+use WayForPay\SDK\Domain\PaymentSystems;
 use WayForPay\SDK\Request\InvoiceRequest;
 
 class InvoiceWizard extends RequestWizard
@@ -107,7 +111,7 @@ class InvoiceWizard extends RequestWizard
     /**
      * @param AccountSecretCredential $credential
      *
-     * @return InvoceWizard
+     * @return InvoiceWizard
      */
     public static function get(AccountSecretCredential $credential)
     {
@@ -274,7 +278,7 @@ public function setLanguage($language)
     }
 
     /**
-     * @return RefundRequest
+     * @return InvoiceRequest
      */
     public function getRequest()
     {
diff --git a/src/Wizard/SettleWizard.php b/src/Wizard/SettleWizard.php
index 9dbf41f..3052c17 100644
--- a/src/Wizard/SettleWizard.php
+++ b/src/Wizard/SettleWizard.php
@@ -15,7 +15,6 @@
 namespace WayForPay\SDK\Wizard;
 
 use WayForPay\SDK\Credential\AccountSecretCredential;
-use WayForPay\SDK\Request\RefundRequest;
 use WayForPay\SDK\Request\SettleRequest;
 
 /**