diff --git a/MMM-WeatherChart.js b/MMM-WeatherChart.js
index 65afa7b..99d4f01 100755
--- a/MMM-WeatherChart.js
+++ b/MMM-WeatherChart.js
@@ -843,6 +843,9 @@ Module.register("MMM-WeatherChart", {
                 },
             };
 
+            if (this.chart) {
+                this.chart.destroy();
+            }
             this.chart = new Chart(ctx, {
                 type: "line",
                 data: {