diff --git a/designer_chart/src/com/fr/design/chart/fun/impl/AbstractIndependentChartUI4Custom.java b/designer_chart/src/com/fr/design/chart/fun/impl/AbstractIndependentChartUI4Custom.java
index ce65ddb86c..76dcefa32f 100644
--- a/designer_chart/src/com/fr/design/chart/fun/impl/AbstractIndependentChartUI4Custom.java
+++ b/designer_chart/src/com/fr/design/chart/fun/impl/AbstractIndependentChartUI4Custom.java
@@ -58,7 +58,7 @@ public abstract class AbstractIndependentChartUI4Custom implements IndependentCh
 
     @Override
     public AbstractChartAttrPane[] getAttrPaneArray(AttributeChangeListener listener){
-        return null;
+        return new AbstractChartAttrPane[]{};
     }
 
     @Override