diff --git a/plugins/sentinel/dashboard.html b/plugins/sentinel/dashboard.html
index 0cb435c..a30cc27 100644
--- a/plugins/sentinel/dashboard.html
+++ b/plugins/sentinel/dashboard.html
@@ -273,8 +273,9 @@
             try {
               _chartInstances[id] = { cpu: null, mem: null, net: null };
               if (typeof MiniChart !== 'undefined') {
-                _chartInstances[id].cpu = new MiniChart(id+'-cpu', '#7aa2f7');
-                _chartInstances[id].mem = new MiniChart(id+'-mem', '#9ece6a');
+                var _hires = function(mc){ var orig=mc.resize.bind(mc); mc.resize=function(){ orig(); mc.canvas.width*=2; mc.ctx.scale(2,1); mc.draw(); }; mc.resize(); };
+                _chartInstances[id].cpu = new MiniChart(id+'-cpu', '#7aa2f7'); _hires(_chartInstances[id].cpu);
+                _chartInstances[id].mem = new MiniChart(id+'-mem', '#9ece6a'); _hires(_chartInstances[id].mem);
               }
               if (typeof DualLineChart !== 'undefined') {
                 _chartInstances[id].net = new DualLineChart(id+'-net', '#bb9af7', '#c0a8f0');