diff --git a/src/ZugferdDocument.php b/src/ZugferdDocument.php
index 2e1aa56f..9f6f86fe 100644
--- a/src/ZugferdDocument.php
+++ b/src/ZugferdDocument.php
@@ -95,14 +95,13 @@ public function getInvoiceObject()
     }
 
     /**
-     * Sets the reference to the internal invoice object
+     * Create a new instance of the internal invoice object
      *
-     * @param \horstoeko\zugferd\entities\basic\rsm\CrossIndustryInvoice|\horstoeko\zugferd\entities\basicwö\rsm\CrossIndustryInvoice|\horstoeko\zugferd\entities\en16931\rsm\CrossIndustryInvoice|\horstoeko\zugferd\entities\extended\rsm\CrossIndustryInvoice|\horstoeko\zugferd\entities\minimum\rsm\CrossIndustryInvoice $invoiceObject
      * @return \horstoeko\zugferd\entities\basic\rsm\CrossIndustryInvoice|\horstoeko\zugferd\entities\basicwö\rsm\CrossIndustryInvoice|\horstoeko\zugferd\entities\en16931\rsm\CrossIndustryInvoice|\horstoeko\zugferd\entities\extended\rsm\CrossIndustryInvoice|\horstoeko\zugferd\entities\minimum\rsm\CrossIndustryInvoice
      */
-    protected function setInvoiceObject($invoiceObject)
+    protected function createInvoiceObject()
     {
-        $this->invoiceObject = $invoiceObject;
+        $this->invoiceObject = $this->getObjectHelper()->getCrossIndustryInvoice();
 
         return $this->invoiceObject;
     }
diff --git a/src/ZugferdDocumentBuilder.php b/src/ZugferdDocumentBuilder.php
index 23faee8a..1250fc14 100644
--- a/src/ZugferdDocumentBuilder.php
+++ b/src/ZugferdDocumentBuilder.php
@@ -97,7 +97,8 @@ public static function createNew(int $profileId): ZugferdDocumentBuilder
      */
     public function initNewDocument(): ZugferdDocumentBuilder
     {
-        $this->setInvoiceObject($this->getObjectHelper()->getCrossIndustryInvoice());
+        $this->createInvoiceObject();
+
         $this->headerTradeAgreement = $this->getInvoiceObject()->getSupplyChainTradeTransaction()->getApplicableHeaderTradeAgreement();
         $this->headerTradeDelivery = $this->getInvoiceObject()->getSupplyChainTradeTransaction()->getApplicableHeaderTradeDelivery();
         $this->headerTradeSettlement = $this->getInvoiceObject()->getSupplyChainTradeTransaction()->getApplicableHeaderTradeSettlement();