From a77dbe9f83be03d72732fcf9c42a8fe5b40f358f Mon Sep 17 00:00:00 2001
From: Wille Marcel <wille.yyz@gmail.com>
Date: Fri, 30 Oct 2020 08:26:14 -0300
Subject: [PATCH] fix error when custom background url is empty

---
 modules/ui/sections/background_list.js | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/modules/ui/sections/background_list.js b/modules/ui/sections/background_list.js
index 351324e1d..ba25f15ba 100644
--- a/modules/ui/sections/background_list.js
+++ b/modules/ui/sections/background_list.js
@@ -266,7 +266,7 @@ export function uiSectionBackgroundList(context) {
 
 
     function editCustom(d3_event) {
-        d3_event.preventDefault();
+        if (d3_event !== undefined) d3_event.preventDefault();
         context.container()
             .call(_settingsCustomBackground);
     }