diff --git a/app/routes/api.invoices.$id.xml.ts b/app/routes/api.invoices.$id.xml.ts
index 6c323ba..5275d1e 100644
--- a/app/routes/api.invoices.$id.xml.ts
+++ b/app/routes/api.invoices.$id.xml.ts
@@ -36,8 +36,11 @@ export async function loader({ request, params }: { request: Request; params: {
   if (!invoice) return Response.json({ error: "Not found" }, { status: 404 });
 
   const missingFields: string[] = [];
-  if (!invoice.company.email && !invoice.company.phone) {
-    missingFields.push("Firma: E-Mail oder Telefon (Kontaktdaten, BR-DE-2)");
+  if (!invoice.company.phone) {
+    missingFields.push("Firma: Telefonnummer (BT-42, Pflichtfeld)");
+  }
+  if (!invoice.company.email) {
+    missingFields.push("Firma: E-Mail-Adresse (BT-43, Pflichtfeld)");
   }
   if (missingFields.length > 0) {
     return Response.json(
diff --git a/app/routes/companies.$id.invoices.$invoiceId.tsx b/app/routes/companies.$id.invoices.$invoiceId.tsx
index a0cbd87..7e70843 100644
--- a/app/routes/companies.$id.invoices.$invoiceId.tsx
+++ b/app/routes/companies.$id.invoices.$invoiceId.tsx
@@ -195,9 +195,8 @@ export default function InvoiceDetailPage() {
   }
 
   const xmlMissingFields: string[] = [];
-  if (!invoice.company.email && !invoice.company.phone) {
-    xmlMissingFields.push("E-Mail oder Telefon der Firma fehlt");
-  }
+  if (!invoice.company.phone) xmlMissingFields.push("Telefonnummer der Firma fehlt");
+  if (!invoice.company.email) xmlMissingFields.push("E-Mail-Adresse der Firma fehlt");
 
   function downloadXml() {
     return downloadFile(`/api/invoices/${invoice.id}/xml`, `rechnung-${invoice.number ?? invoice.id}.xml`);