diff --git a/src/Blocks/CheckoutMapBlock.php b/src/Blocks/CheckoutMapBlock.php
index fe9e37a..693f7e9 100644
--- a/src/Blocks/CheckoutMapBlock.php
+++ b/src/Blocks/CheckoutMapBlock.php
@@ -65,7 +65,7 @@ public static function extend_cart_data(): array
                 'city'   => $city,
                 'points' => $city !== -1 ? $api->getOffices([
                                                                 'city_code' => $city,
-                                                            ])['body'] : '[]',
+                                                            ])->body() : '[]',
             ];
         }
 
diff --git a/src/CdekApi.php b/src/CdekApi.php
index 601a1a9..a75bc83 100644
--- a/src/CdekApi.php
+++ b/src/CdekApi.php
@@ -310,8 +310,8 @@ public function getOffices($filter)
                 'GET',
                 $this->tokenStorage->getToken(),
                 $filter,
-            )->json();
-            if (!$result) {
+            );
+            if (!$result->body()) {
                 return [
                     'success' => false,
                     'message' => esc_html__(
diff --git a/src/Controllers/LocationController.php b/src/Controllers/LocationController.php
index e94456d..bac3a21 100644
--- a/src/Controllers/LocationController.php
+++ b/src/Controllers/LocationController.php
@@ -20,10 +20,10 @@ public static function getPoints(WP_REST_Request $data): WP_REST_Response
         {
             $data = (new CdekApi)->getOffices($data->get_params());
 
-            return new WP_REST_Response($data instanceof WP_Error ? $data : $data['body'], 200, [
-                'x-current-page'   => $data['headers']['x-current-page'] ?? null,
-                'x-total-pages'    => $data['headers']['x-total-pages'] ?? null,
-                'x-total-elements' => $data['headers']['x-total-elements'] ?? null,
+            return new WP_REST_Response($data->body(), 200, [
+                'x-current-page'   => $data->getHeaders()['x-current-page'] ?? null,
+                'x-total-pages'    => $data->getHeaders()['x-total-pages'] ?? null,
+                'x-total-elements' => $data->getHeaders()['x-total-elements'] ?? null,
             ]);
         }
 
diff --git a/src/Transport/HttpResponse.php b/src/Transport/HttpResponse.php
index 7f8e2b4..c743752 100644
--- a/src/Transport/HttpResponse.php
+++ b/src/Transport/HttpResponse.php
@@ -51,7 +51,7 @@ public function getStatusCode(): int
          */
         public function data(): array
         {
-            if (!isset($this->headers['content-type']) || $this->headers['content-type'] !== 'application/json') {
+            if (!isset($this->headers['content-type']) || strpos($this->headers['content-type'], 'application/json') === false) {
                 throw new RuntimeException('Response is not JSON');
             }
 
@@ -67,7 +67,7 @@ public function data(): array
          */
         public function error(): array
         {
-            if (!isset($this->headers['content-type']) || $this->headers['content-type'] !== 'application/json') {
+            if (!isset($this->headers['content-type']) || strpos($this->headers['content-type'], 'application/json') === false) {
                 throw new RuntimeException('Response is not JSON');
             }
 
@@ -83,7 +83,7 @@ public function error(): array
          */
         public function json(): array
         {
-            if (!isset($this->headers['content-type']) || $this->headers['content-type'] !== 'application/json') {
+            if (!isset($this->headers['content-type']) || strpos($this->headers['content-type'], 'application/json') === false) {
                 throw new RuntimeException('Response is not JSON');
             }
 
diff --git a/src/UI/AdminShippingFields.php b/src/UI/AdminShippingFields.php
index ac69419..4a9ffe7 100644
--- a/src/UI/AdminShippingFields.php
+++ b/src/UI/AdminShippingFields.php
@@ -48,8 +48,7 @@ public function __invoke($item_id, $item): void
                     break;
                 case MetaKeys::OFFICE_CODE:
                     try {
-                        $officeAddress = json_decode((new CdekApi)->getOffices(['code' => $meta['value']])['body'],
-                                                     true, 512, JSON_THROW_ON_ERROR);
+                        $officeAddress = (new CdekApi)->getOffices(['code' => $meta['value']])->json();
 
                         if (empty($officeAddress[0]['location']['address'])) {
                             self::renderOffice(esc_html__('Not available for order', 'cdekdelivery'));
diff --git a/src/UI/CheckoutMap.php b/src/UI/CheckoutMap.php
index 54fdd82..3493c21 100644
--- a/src/UI/CheckoutMap.php
+++ b/src/UI/CheckoutMap.php
@@ -37,7 +37,7 @@ public function __invoke($shippingMethodCurrent): void
 
             $points = $city !== -1 ? $api->getOffices([
                                                           'city_code' => $city,
-                                                      ])['body'] : '[]';
+                                                      ])->body() : '[]';
 
             $mapAutoClose = CheckoutHelper::getMapAutoClose();