diff --git a/charts.html b/charts.html
index 742909b..07012b6 100644
--- a/charts.html
+++ b/charts.html
@@ -126,9 +126,12 @@
         setInterval(async () => {
             const newDatum = await fetch("data/last/");
             const snapshot = (await newDatum.json()).snapshots[0];
-            chart.data.datasets[0].data.splice(0, 1, {x: snapshot.time, y: snapshot.humidity});
-            chart.data.datasets[1].data.splice(0, 1, {x: snapshot.time, y: snapshot.temp});
-            chart.data.datasets[2].data.splice(0, 1, {x: snapshot.time, y: snapshot.co2});
+            chart.data.datasets[0].data.splice(0, 1);
+            chart.data.datasets[0].data.push({x: snapshot.time, y: snapshot.humidity});
+            chart.data.datasets[1].data.splice(0, 1);
+            chart.data.datasets[1].data.push({x: snapshot.time, y: snapshot.temp});
+            chart.data.datasets[2].data.splice(0, 1);
+            chart.data.datasets[2].data.push({x: snapshot.time, y: snapshot.co2});
             chart.update(0);
         }, 10 * 1000);
     }