diff --git a/designer-chart/src/main/java/com/fr/extended/chart/ExtendedCustomFieldComboBoxPane.java b/designer-chart/src/main/java/com/fr/extended/chart/ExtendedCustomFieldComboBoxPane.java
index 119d73bda..fe02f67c0 100644
--- a/designer-chart/src/main/java/com/fr/extended/chart/ExtendedCustomFieldComboBoxPane.java
+++ b/designer-chart/src/main/java/com/fr/extended/chart/ExtendedCustomFieldComboBoxPane.java
@@ -22,6 +22,10 @@ public class ExtendedCustomFieldComboBoxPane extends AbstractCustomFieldComboBox
         return new ExtendedCustomFieldNamePane();
     }
 
+    @Override
+    protected boolean seriesComboBoxHasNone() {
+        return true;
+    }
 
     @Override
     public void populateBean(AbstractDataConfig ob) {