1 files changed, 3 insertions, 0 deletions
diff --git a/web/app/view/edit/Devices.js b/web/app/view/edit/Devices.js
index 7c1f9358..b5b6badd 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;