diff --git a/admin/controller/extension/module/retailcrm.php b/admin/controller/extension/module/retailcrm.php
index 0525b8a..08c355c 100644
--- a/admin/controller/extension/module/retailcrm.php
+++ b/admin/controller/extension/module/retailcrm.php
@@ -546,7 +546,7 @@ class ControllerExtensionModuleRetailcrm extends Controller
 
         $response = $this->retailcrm->deliveryTypesList();
 
-        if ($response == false) {
+        if (!$response->isSuccessful()) {
             $this->_error['warning'] = $this->language->get('text_error_api');
         }
         
diff --git a/admin/model/extension/retailcrm/references.php b/admin/model/extension/retailcrm/references.php
index 54d7edc..d3b8768 100644
--- a/admin/model/extension/retailcrm/references.php
+++ b/admin/model/extension/retailcrm/references.php
@@ -83,7 +83,7 @@ class ModelExtensionRetailcrmReferences extends Model
         
         $response = $this->retailcrm->deliveryTypesList();
 
-        return ($response === false) ? array() : $response->deliveryTypes;
+        return (!$response->isSuccessful()) ? array() : $response->deliveryTypes;
     }
 
     public function getApiOrderStatuses()
@@ -92,7 +92,7 @@ class ModelExtensionRetailcrmReferences extends Model
 
         $response = $this->retailcrm->statusesList();
 
-        return ($response === false) ? array() : $response->statuses;
+        return (!$response->isSuccessful()) ? array() : $response->statuses;
     }
 
     public function getApiPaymentTypes()
@@ -101,7 +101,7 @@ class ModelExtensionRetailcrmReferences extends Model
 
         $response = $this->retailcrm->paymentTypesList();
 
-        return ($response === false) ? array() : $response->paymentTypes;
+        return (!$response->isSuccessful()) ? array() : $response->paymentTypes;
     }
 
     protected function initApi()
diff --git a/system/library/retailcrm/RetailcrmProxy.php b/system/library/retailcrm/RetailcrmProxy.php
index 70d199f..872026e 100644
--- a/system/library/retailcrm/RetailcrmProxy.php
+++ b/system/library/retailcrm/RetailcrmProxy.php
@@ -43,7 +43,6 @@ class RetailcrmProxy
                     $error = implode("\n", $response['errors']);
                     error_log($date .' '. $error . "\n", 3, $this->log);
                 }
-                $response = false;
             }
 
             return $response;