diff --git a/admin/model/extension/retailcrm/order.php b/admin/model/extension/retailcrm/order.php
index a097a04..b848aa4 100644
--- a/admin/model/extension/retailcrm/order.php
+++ b/admin/model/extension/retailcrm/order.php
@@ -57,6 +57,7 @@ class ModelExtensionRetailcrmOrder extends Model {
     private function process($order_data) {
         $order = array();
 
+        $this->load->model('catalog/product');
         $this->moduleTitle = $this->getModuleTitle();
         $payment_code = $order_data['payment_code'];
         $delivery_code = $order_data['shipping_code'];
diff --git a/system/library/retailcrm/RetailcrmApiClient5.php b/system/library/retailcrm/RetailcrmApiClient5.php
index bf80d53..2c71346 100644
--- a/system/library/retailcrm/RetailcrmApiClient5.php
+++ b/system/library/retailcrm/RetailcrmApiClient5.php
@@ -236,7 +236,7 @@ class RetailcrmApiClient5
 
         return $this->client->makeRequest(
             "/custom-fields/$entity/edit/{$customField['code']}",
-            $this->client::METHOD_POST,
+            RetailcrmHttpClient::METHOD_POST,
             array('customField' => json_encode($customField))
         );
     }