diff --git a/usps_api_bridge.php b/usps_api_bridge.php
index 8d73353..054bf04 100644
--- a/usps_api_bridge.php
+++ b/usps_api_bridge.php
@@ -15,7 +15,7 @@ class Usps_Api_Bridge extends Module
     {
         $this->name = 'usps_api_bridge';
         $this->tab = 'shipping_logistics';
-        $this->version = '1.0.1';
+        $this->version = '1.0.2';
         $this->author = 'Panariga';
         $this->need_instance = 0;
         $this->bootstrap = true;
@@ -219,8 +219,12 @@ class Usps_Api_Bridge extends Module
         if (!empty($params->id_address_delivery)) {
             $address = new Address($params->id_address_delivery);
             if (Validate::isLoadedObject($address)) {
-                $destZip = $address->postcode;
-                $destCountryIso = Country::getIsoById($address->id_country);
+                if (!empty($address->postcode)) {
+                    $destZip = $address->postcode;
+                }
+                if (!empty($address->id_country)) {
+                    $destCountryIso = Country::getIsoById($address->id_country);
+                }
             }
         }
 
@@ -241,6 +245,9 @@ class Usps_Api_Bridge extends Module
         }
 
         if (empty($destZip)) {
+            $this->externalLog([
+                'destZip' => 'is empty',
+            ]);
             return false;
         }