diff --git a/superset-frontend/plugins/plugin-chart-echarts/src/Timeseries/EchartsTimeseries.tsx b/superset-frontend/plugins/plugin-chart-echarts/src/Timeseries/EchartsTimeseries.tsx
index 516255de0cbd3..202d627569650 100644
--- a/superset-frontend/plugins/plugin-chart-echarts/src/Timeseries/EchartsTimeseries.tsx
+++ b/superset-frontend/plugins/plugin-chart-echarts/src/Timeseries/EchartsTimeseries.tsx
@@ -205,7 +205,7 @@ export default function EchartsTimeseries({
         const pointerEvent = eventParams.event.event;
         const values = [
           ...(eventParams.name ? [eventParams.name] : []),
-          ...labelMap[seriesName],
+          ...(labelMap[seriesName] ?? []),
         ];
         if (data && xAxis.type === AxisType.time) {
           drillToDetailFilters.push({