diff --git a/app/Ninja/Transformers/InvoiceTransformer.php b/app/Ninja/Transformers/InvoiceTransformer.php
index 4899d1cc0a19..37da94bc0165 100644
--- a/app/Ninja/Transformers/InvoiceTransformer.php
+++ b/app/Ninja/Transformers/InvoiceTransformer.php
@@ -66,7 +66,9 @@ class InvoiceTransformer extends EntityTransformer
             'account_key' => $this->account->account_key,
             'user_id' => (int) $invoice->user->public_id + 1,
             'custom_value1' => $invoice->custom_value1,
-            'custom_value2' => $invoice->custom_value2
+            'custom_value2' => $invoice->custom_value2,
+            'custom_taxes1' => (bool) $invoice->custom_taxes1,
+            'custom_taxes2' => (bool) $invoice->custom_taxes2,
         ];
     }
 }
\ No newline at end of file