From 0b3acb06b51d40327ecc52148840ac4b17c73b1a Mon Sep 17 00:00:00 2001
From: Raphael Michel <michel@rami.io>
Date: Mon, 6 Sep 2021 16:33:27 +0200
Subject: [PATCH] Invoice: Fix incorrect reference to original invoice number

---
 src/pretix/base/invoice.py | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/src/pretix/base/invoice.py b/src/pretix/base/invoice.py
index 58a74c3e65..13d6fb46ae 100644
--- a/src/pretix/base/invoice.py
+++ b/src/pretix/base/invoice.py
@@ -803,7 +803,7 @@ class Modern1Renderer(ClassicInvoiceRenderer):
                 objects += [
                     _draw(pgettext('invoice', 'Cancellation number'), self.invoice.number,
                           value_size, self.left_margin + 50 * mm, 45 * mm),
-                    _draw(pgettext('invoice', 'Original invoice'), self.invoice.number,
+                    _draw(pgettext('invoice', 'Original invoice'), self.invoice.refers.number,
                           value_size, self.left_margin + 100 * mm, date_x - self.left_margin - 100 * mm - 5 * mm),
                 ]
             else: