diff --git a/templates/inspector.html b/templates/inspector.html
index a47d51c..7780ad2 100644
--- a/templates/inspector.html
+++ b/templates/inspector.html
@@ -428,7 +428,7 @@ function renderInspector(data) {
 
   const updEl = document.getElementById('inspector-updated');
   if (updEl && data.updated) {
-    const updMs = new Date(data.updated + (data.updated.includes('Z') ? '' : 'Z'));
+    const updMs = new Date(_toIso(data.updated));
     const ageMin = (Date.now() - updMs) / 60000;
     const timeStr = updMs.toLocaleTimeString();
     if (ageMin > 15) {