diff --git a/superset-frontend/temporary_superset_ui/superset-ui/plugins/plugin-chart-echarts/src/Timeseries/controlPanel.tsx b/superset-frontend/temporary_superset_ui/superset-ui/plugins/plugin-chart-echarts/src/Timeseries/controlPanel.tsx
index 103043a1b0b2..0c5144415f05 100644
--- a/superset-frontend/temporary_superset_ui/superset-ui/plugins/plugin-chart-echarts/src/Timeseries/controlPanel.tsx
+++ b/superset-frontend/temporary_superset_ui/superset-ui/plugins/plugin-chart-echarts/src/Timeseries/controlPanel.tsx
@@ -300,7 +300,7 @@ const config: ControlPanelConfig = {
               type: 'BoundsControl',
               label: t('Y Axis Bounds'),
               renderTrigger: true,
-              default: [null, null],
+              default: [undefined, undefined],
               description: t(
                 'Bounds for the Y-axis. When left empty, the bounds are ' +
                   'dynamically defined based on the min/max of the data. Note that ' +