diff --git a/plugins/sentinel/dashboard.html b/plugins/sentinel/dashboard.html
index 9cf9dd6..d63ae5f 100644
--- a/plugins/sentinel/dashboard.html
+++ b/plugins/sentinel/dashboard.html
@@ -273,10 +273,12 @@
             try {
               _chartInstances[id] = { cpu: null, mem: null, net: null };
               if (typeof MiniChart !== 'undefined') {
-                _chartInstances[id].cpu = var mc = new MiniChart(id+'-cpu', '#7aa2f7');
+                var mc = new MiniChart(id+'-cpu', '#7aa2f7');
+                _chartInstances[id].cpu = mc;
                 mc._origResize = mc.resize;
                 mc.resize = function(){ this._origResize(); this.canvas.width = this.canvas.width * 2; this.canvas.height = 120; this.ctx.scale(2,2); this.draw(); };
                 mc.resize();
+                _chartInstances[id].mem = mm;
                 _chartInstances[id].mem = var mm = new MiniChart(id+'-mem', '#9ece6a');
                 mm._origResize = mm.resize;
                 mm.resize = function(){ this._origResize(); this.canvas.width = this.canvas.width * 2; this.canvas.height = 120; this.ctx.scale(2,2); this.draw(); };