diff --git a/Model.js b/Model.js
index eab29f3..f7f8db4 100644
--- a/Model.js
+++ b/Model.js
@@ -122,6 +122,17 @@ function fmtGB(v) {
   return (n >= 100 ? n.toFixed(0) : n.toFixed(1)) + " GB"
 }
 
+// Lifetime usage for display. The daemon keeps `allTime` as completed days
+// only (rolled at local midnight), so today's bytes are added here: otherwise
+// ALL-TIME sits unchanged all day and can read below TODAY. Null-safe — a
+// missing side counts as 0, both missing stays null.
+function lifetimeGB(allTimeGB, todayGB) {
+  var a = num(allTimeGB)
+  var t = num(todayGB)
+  if (a === null && t === null) return null
+  return (a === null ? 0 : a) + (t === null ? 0 : t)
+}
+
 function fmtPct(v, decimals) {
   var n = num(v)
   return n === null ? "—" : n.toFixed(decimals === undefined ? 1 : decimals) + "%"
diff --git a/Panel.qml b/Panel.qml
index 86193c3..7d1ad17 100644
--- a/Panel.qml
+++ b/Panel.qml
@@ -713,7 +713,8 @@ Panel {
             Text {
               width: (parent.width - 2 * parent.spacing) * 0.40
               text: root.hasData && s.usage
-                ? "ALL-TIME ↓ " + Model.fmtGB(s.usage.allTimeDownGB) + " ↑ " + Model.fmtGB(s.usage.allTimeUpGB)
+                ? "ALL-TIME ↓ " + Model.fmtGB(Model.lifetimeGB(s.usage.allTimeDownGB, s.usage.downGB))
+                  + " ↑ " + Model.fmtGB(Model.lifetimeGB(s.usage.allTimeUpGB, s.usage.upGB))
                 : ""
               textFormat: Text.PlainText
               elide: Text.ElideRight