diff --git a/app/Models/Customer.php b/app/Models/Customer.php
index 5d5e5c7c..5727c483 100644
--- a/app/Models/Customer.php
+++ b/app/Models/Customer.php
@@ -334,7 +334,9 @@ class Customer extends Authenticatable implements MustVerifyEmail
         if (!$crmCustomer) {
             throw new CrmException('CRM get Customer returned null');
         }
-        $data['postcode'] = Arr::get($data, 'postal_code');
+        if (isset($data["postal_code"])) {
+            $data['postcode'] = Arr::get($data, 'postal_code');
+        }
         unset(
             $data["username"],
             $data["question_id"],