diff --git a/application/PreorderBillingInvoice/PreorderBillingInvoiceController.php b/application/PreorderBillingInvoice/PreorderBillingInvoiceController.php
index 67ffd8d7d..010967c34 100644
--- a/application/PreorderBillingInvoice/PreorderBillingInvoiceController.php
+++ b/application/PreorderBillingInvoice/PreorderBillingInvoiceController.php
@@ -599,7 +599,7 @@ class PreorderBillingInvoiceController extends mfBaseController {
             if(count($invoice_detail_data)) {
                 // create CSV file
                 //var_dump($invoice_detail_data);exit;
-                $csv = "\u{FEFF}Netzbetreiber;Rechungsnummer;Rechnungsdateum;Netzgebiet;OAID;Extref;Bestelldatum;Periode von;Periode bis;Artikelnummer;Produkt;Anzahl;Preis Netto\n";
+                $csv = "\u{FEFF}Netzbetreiber;Rechungsnummer;Rechnungsdatum;Netzgebiet;OAID;Extref;Bestelldatum;Periode von;Periode bis;Artikelnummer;Produkt;Anzahl;Preis Netto\n";
                 foreach ($invoice_detail_data as $detail) {
                     //var_dump($detail);
                     //exit;
@@ -616,7 +616,7 @@ class PreorderBillingInvoiceController extends mfBaseController {
                     $csv .= '"'.$detail["article_number"].'";';
                     $csv .= '"'.$detail["product_name"].'";';
                     $csv .= round($detail["amount"], 3).';';
-                    $csv .= round($detail["price"], 2)."\n";
+                    $csv .= '"'.number_format($detail["price"], 2, ",","").'"'."\n";
                 }
 
                 $subfolder = TT_PREORDER_BILLING[$invoice->netowner_id]["subfolder"]."/".$today->format("Y");