diff --git a/src/chart/chart.config.ts b/src/chart/chart.config.ts
index b2e311b..45cf8d6 100644
--- a/src/chart/chart.config.ts
+++ b/src/chart/chart.config.ts
@@ -1,3 +1,8 @@
+/*
+ * Copyright (C) 2019 - 2024 Devexperts Solutions IE Limited
+ * This Source Code Form is subject to the terms of the Mozilla Public License, v. 2.0.
+ * If a copy of the MPL was not distributed with this file, You can obtain one at https://mozilla.org/MPL/2.0/.
+ */
 /*
  * Copyright (C) 2019 - 2024 Devexperts Solutions IE Limited
  * This Source Code Form is subject to the terms of the Mozilla Public License, v. 2.0.
@@ -231,7 +236,7 @@ export const getDefaultConfig = (): FullChartConfig => ({
 			logoWidth: 20,
 			logoHeight: 20,
 		},
-		highLow: { visible: false, font: '12px sans-serif' },
+		highLow: { visible: false, font: '12px sans-serif', prefix: { high: 'H: ', low: 'L: ' } },
 		highlights: {
 			visible: false,
 			fontFamily: 'Open Sans',
@@ -1148,6 +1153,7 @@ export interface ChartConfigComponentsHighLow {
 	 * Font config of high/low labels.
 	 */
 	font: string;
+	prefix: { high: string; low: string };
 }
 export interface ChartConfigComponentsCrossTool {
 	/**
diff --git a/src/chart/components/high_low/high-low.drawer.ts b/src/chart/components/high_low/high-low.drawer.ts
index 81a3a69..dfe8187 100644
--- a/src/chart/components/high_low/high-low.drawer.ts
+++ b/src/chart/components/high_low/high-low.drawer.ts
@@ -1,3 +1,8 @@
+/*
+ * Copyright (C) 2019 - 2024 Devexperts Solutions IE Limited
+ * This Source Code Form is subject to the terms of the Mozilla Public License, v. 2.0.
+ * If a copy of the MPL was not distributed with this file, You can obtain one at https://mozilla.org/MPL/2.0/.
+ */
 /*
  * Copyright (C) 2019 - 2024 Devexperts Solutions IE Limited
  * This Source Code Form is subject to the terms of the Mozilla Public License, v. 2.0.
@@ -84,7 +89,8 @@ export class HighLowDrawer implements Drawer {
 	 */
 	private getMarkerText(yValue: number, type: MarkerType): string {
 		const formattedValue = this.chartModel.pane.regularFormatter(yValue);
-		const prefix = type === 'high' ? 'H:' : 'L:';
+		const prefix =
+			type === 'high' ? this.config.components.highLow.prefix.high : this.config.components.highLow.prefix.low;
 		return `${prefix} ${formattedValue}`;
 	}