diff --git a/containers/libreportal/frontend/js/components/admin/admin-system.js b/containers/libreportal/frontend/js/components/admin/admin-system.js
index ff52b43..3a774df 100644
--- a/containers/libreportal/frontend/js/components/admin/admin-system.js
+++ b/containers/libreportal/frontend/js/components/admin/admin-system.js
@@ -268,6 +268,7 @@ class AdminSystem {
                     `<div class="sys-net-legend"><span><i class="dot ok"></i>↓ ${this.rate(lastRx)}</span><span><i class="dot accent"></i>↑ ${this.rate(lastTx)}</span></div>`,
                     'rx / tx', 'net_rx')}
                 ${this.chartCard('Load (1m)',    C.areaChart(this.series('load1'), { color: 'accent', fmt: v => v.toFixed(2) }), `${cpu.cores || '?'} cores`, 'load1')}
+                ${this.chartCard('Disk usage',   C.areaChart(this.series('disk'),  { color: 'status-success', max: 100, fmt: v => `${Math.round(v)}%` }), 'root %', 'disk')}
                 ${hasSwap ? this.chartCard('Swap usage', C.areaChart(this.series('swap'), { color: 'status-warning', max: 100, fmt: v => `${Math.round(v)}%` }), 'last %', 'swap') : ''}
             </div>`;