diff --git a/tests/IntegrationTests/InvoiceIntegrationTest.php b/tests/IntegrationTests/InvoiceIntegrationTest.php
index 0ee5f668..74bea283 100644
--- a/tests/IntegrationTests/InvoiceIntegrationTest.php
+++ b/tests/IntegrationTests/InvoiceIntegrationTest.php
@@ -79,6 +79,7 @@ public function testGetConceptInvoiceWorks()
         $this->assertSame('15.00', $invoiceLine->getValueInc());
         $this->assertSame('15.00', $invoiceLine->getUnitsPriceExcl());
         $this->assertSame('8020', $invoiceLine->getDim1());
+        $this->assertSame('VN', $invoiceLine->getVatCode());
 
         // TODO - Vat lines