diff --git a/designer-chart/src/main/java/com/fr/extended/chart/UIComboBoxWithNone.java b/designer-chart/src/main/java/com/fr/extended/chart/UIComboBoxWithNone.java
index 57960a47b..7be740f4d 100644
--- a/designer-chart/src/main/java/com/fr/extended/chart/UIComboBoxWithNone.java
+++ b/designer-chart/src/main/java/com/fr/extended/chart/UIComboBoxWithNone.java
@@ -10,7 +10,7 @@ import java.util.List;
  */
 public class UIComboBoxWithNone extends UIComboBox {
 
-    private static String getNoneLocaleString() {
+    public String getNoneLocaleString() {
         return Toolkit.i18nText("Fine-Design_Chart_Use_None");
     }