From 78c121fcb45c5fe5a6509c90898811d7e9d7a253 Mon Sep 17 00:00:00 2001
From: Anton Tananaev <anton.tananaev@gmail.com>
Date: Sat, 22 Apr 2017 10:16:54 +1200
Subject: Avoid negative last update (fix #475)

---
 web/app/view/edit/Devices.js | 3 +++
 1 file changed, 3 insertions(+)

diff --git a/web/app/view/edit/Devices.js b/web/app/view/edit/Devices.js
index 7c1f935..b5b6bad 100644
--- a/web/app/view/edit/Devices.js
+++ b/web/app/view/edit/Devices.js
@@ -163,6 +163,9 @@ Ext.define('Traccar.view.edit.Devices', {
 
                 if (value) {
                     seconds = Math.floor((new Date() - value) / 1000);
+                    if (seconds < 0) {
+                        seconds = 0;
+                    }
                     interval = Math.floor(seconds / 86400);
                     if (interval > 1) {
                         return interval + ' ' + Strings.sharedDays;
-- 
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