From 987cc14bf72be75dabd65fa26d86fe72dd4b2352 Mon Sep 17 00:00:00 2001
From: Henning Leutz <leutz@pcsg.de>
Date: Wed, 3 Feb 2021 13:55:14 +0100
Subject: [PATCH] fix: quiqqer/invoice#97

---
 bin/backend/controls/panels/TemporaryInvoice.js | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/bin/backend/controls/panels/TemporaryInvoice.js b/bin/backend/controls/panels/TemporaryInvoice.js
index 4807572..a45a072 100644
--- a/bin/backend/controls/panels/TemporaryInvoice.js
+++ b/bin/backend/controls/panels/TemporaryInvoice.js
@@ -1128,7 +1128,7 @@ define('package/quiqqer/invoice/bin/backend/controls/panels/TemporaryInvoice', [
                 this.setAttribute('date', formData.date + ' 00:00:00');
             }
 
-            if (formData.contact_person) {
+            if (typeof formData.contact_person !== 'undefined') {
                 this.setAttribute('contact_person', formData.contact_person);
             }
 
-- 
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