diff --git a/web/frontend/src/components/StatsPie.vue b/web/frontend/src/components/StatsPie.vue
index 1eb796c..c3e7e7e 100644
--- a/web/frontend/src/components/StatsPie.vue
+++ b/web/frontend/src/components/StatsPie.vue
@@ -69,6 +69,8 @@ export default class StatsPie extends Vue {
 
   stats: StatResult[];
 
+  chart?: Chart;
+
   constructor() {
     super();
     this.stats = [];
@@ -152,7 +154,10 @@ export default class StatsPie extends Vue {
     const headers = sortedStats.map((s) => s.name);
     const colors = sortedStats.map(() => randomColor());
 
-    const chart = new Chart(ctx, {
+    if (this.chart) {
+      this.chart.destroy();
+    }
+    this.chart = new Chart(ctx, {
       type: 'doughnut',
       data: {
         labels: headers,