diff --git a/poi-ooxml/src/main/java/org/apache/poi/xddf/usermodel/chart/XDDFChart.java b/poi-ooxml/src/main/java/org/apache/poi/xddf/usermodel/chart/XDDFChart.java
index 7b29b33a28..8ac25748d8 100644
--- a/poi-ooxml/src/main/java/org/apache/poi/xddf/usermodel/chart/XDDFChart.java
+++ b/poi-ooxml/src/main/java/org/apache/poi/xddf/usermodel/chart/XDDFChart.java
@@ -1051,7 +1051,6 @@ public abstract class XDDFChart extends POIXMLDocumentPart implements TextContai
      * @since POI 4.0.0
      */
     public void setExternalId(String id) {
-        getCTChartSpace().addNewExternalData().setId(id);
         CTChartSpace ctChartSpace = getCTChartSpace();
         CTExternalData externalData = ctChartSpace.isSetExternalData()
                 ? ctChartSpace.getExternalData()