diff --git a/plugins/sentinel/dashboard.html b/plugins/sentinel/dashboard.html
index a8d43ff..6e23a65 100644
--- a/plugins/sentinel/dashboard.html
+++ b/plugins/sentinel/dashboard.html
@@ -188,9 +188,9 @@
               '<div class="card-mid">'+
                 '<div class="metrics-body">'+
                   '<div style="display:flex;flex-wrap:wrap;gap:12px;margin-bottom:4px">'+
-                    '<div class="chart-box"><canvas class="chart-cpu" width="160" height="50"></canvas></div>'+
-                    '<div class="chart-box"><canvas class="chart-mem" width="160" height="50"></canvas></div>'+
-                    '<div class="chart-box"><canvas class="chart-net" width="160" height="50"></canvas></div>'+
+                    '<div class="chart-box"><canvas id="'+id+'-cpu" width="160" height="50"></canvas></div>'+
+                    '<div class="chart-box"><canvas id="'+id+'-mem" width="160" height="50"></canvas></div>'+
+                    '<div class="chart-box"><canvas id="'+id+'-net" width="160" height="50"></canvas></div>'+
                   '</div>'+
                   '<div class="metric-row">'+
                     '<div class="metric"><div class="metric-label">CPU</div><div class="metric-value cpu-val" style="font-size:1.3rem">0%</div></div>'+
@@ -208,9 +208,9 @@
               if (mcBody) {
                 try {
                   _chartInstances[id] = [
-                    new MiniChart(mcBody.querySelector('.chart-cpu'), '#7aa2f7'),
-                    new MiniChart(mcBody.querySelector('.chart-mem'), '#9ece6a'),
-                    new MiniChart(mcBody.querySelector('.chart-net'), '#e0af68'),
+                    new MiniChart(id+'-cpu', '#7aa2f7'),
+                    new MiniChart(id+'-mem', '#9ece6a'),
+                    new MiniChart(id+'-net', '#e0af68'),
                   ];
                 } catch(e) { /* MiniChart init failed, continue without charts */ }
               }