diff --git a/ui-ngx/src/app/modules/home/components/widget/lib/chart/time-series-chart-widget.component.ts b/ui-ngx/src/app/modules/home/components/widget/lib/chart/time-series-chart-widget.component.ts
index 0a242eba36..def776897e 100644
--- a/ui-ngx/src/app/modules/home/components/widget/lib/chart/time-series-chart-widget.component.ts
+++ b/ui-ngx/src/app/modules/home/components/widget/lib/chart/time-series-chart-widget.component.ts
@@ -169,6 +169,6 @@ export class TimeSeriesChartWidgetComponent implements OnInit, OnDestroy, AfterV
   }
 
   public toggleLegendKey(legendKey: LegendKey) {
-    this.timeSeriesChart.toggleKey(legendKey.dataKey);
+    this.timeSeriesChart.toggleKey(legendKey.dataKey, legendKey.dataIndex);
   }
 }
diff --git a/ui-ngx/src/app/modules/home/components/widget/lib/chart/time-series-chart.ts b/ui-ngx/src/app/modules/home/components/widget/lib/chart/time-series-chart.ts
index d93f529de8..c5d09cfa6e 100644
--- a/ui-ngx/src/app/modules/home/components/widget/lib/chart/time-series-chart.ts
+++ b/ui-ngx/src/app/modules/home/components/widget/lib/chart/time-series-chart.ts
@@ -56,7 +56,14 @@ import {
   measureAxisNameSize
 } from '@home/components/widget/lib/chart/echarts-widget.models';
 import { DateFormatProcessor, ValueSourceType } from '@shared/models/widget-settings.models';
-import { formattedDataFormDatasourceData, formatValue, isDefinedAndNotNull, isEqual, mergeDeep } from '@core/utils';
+import {
+  formattedDataFormDatasourceData,
+  formatValue,
+  isDefined,
+  isDefinedAndNotNull,
+  isEqual,
+  mergeDeep
+} from '@core/utils';
 import { DataKey, Datasource, DatasourceType, FormattedData, widgetType } from '@shared/models/widget.models';
 import * as echarts from 'echarts/core';
 import { CallbackDataParams, PiecewiseVisualMapOption } from 'echarts/types/dist/shared';
@@ -300,7 +307,7 @@ export class TbTimeSeriesChart {
     }
   }
 
-  public toggleKey(dataKey: DataKey): void {
+  public toggleKey(dataKey: DataKey, dataIndex?: number): void {
     const enable = dataKey.hidden;
     const dataItem = this.dataItems.find(d => d.dataKey === dataKey);
     if (dataItem) {
@@ -320,6 +327,9 @@ export class TbTimeSeriesChart {
       this.timeSeriesChart.setOption(this.timeSeriesChartOptions, this.stackMode ? {notMerge: true} : {replaceMerge: mergeList});
       this.updateAxes();
       dataKey.hidden = !enable;
+      if (isDefined(dataIndex)) {
+        this.ctx.defaultSubscription.updateDataVisibility(dataIndex);
+      }
       if (enable) {
         this.timeSeriesChart.dispatchAction({
           type: 'highlight',