From a8d15571ac7efc00fb8187d2f06e382897106957 Mon Sep 17 00:00:00 2001
From: Hillel Coren <hillelcoren@gmail.com>
Date: Wed, 11 Jan 2017 11:35:59 +0200
Subject: [PATCH] Prevent blank invoice numbers

---
 app/Ninja/Repositories/InvoiceRepository.php | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/app/Ninja/Repositories/InvoiceRepository.php b/app/Ninja/Repositories/InvoiceRepository.php
index e5285d97fbd1..1286c6ca13b1 100644
--- a/app/Ninja/Repositories/InvoiceRepository.php
+++ b/app/Ninja/Repositories/InvoiceRepository.php
@@ -336,7 +336,7 @@ class InvoiceRepository extends BaseRepository
             $account->save();
         }
 
-        if (isset($data['invoice_number']) && !$invoice->is_recurring) {
+        if (!empty($data['invoice_number']) && !$invoice->is_recurring) {
             $invoice->invoice_number = trim($data['invoice_number']);
         }