diff --git a/poi-ooxml/src/main/java/org/apache/poi/xddf/usermodel/chart/XDDFChartData.java b/poi-ooxml/src/main/java/org/apache/poi/xddf/usermodel/chart/XDDFChartData.java
index b5d9d3308b..a88c0e50ec 100644
--- a/poi-ooxml/src/main/java/org/apache/poi/xddf/usermodel/chart/XDDFChartData.java
+++ b/poi-ooxml/src/main/java/org/apache/poi/xddf/usermodel/chart/XDDFChartData.java
@@ -178,6 +178,20 @@ public abstract class XDDFChartData {
             this.valuesData = values;
         }
 
+        /**
+         * Set the Chart Series title.
+         * @param title chart series title
+         * @since POI 5.2.3
+         */
+        public void setTitle(String title) {
+            setTitle(title, null);
+        }
+
+        /**
+         * Set the Chart Series title.
+         * @param title chart series title
+         * @param titleRef cell reference
+         */
         public void setTitle(String title, CellReference titleRef) {
             if (titleRef == null) {
                 getSeriesText().setV(title);
diff --git a/poi/src/main/java9/module-info.class b/poi/src/main/java9/module-info.class
index 68a5947012..474a97c4b1 100644
Binary files a/poi/src/main/java9/module-info.class and b/poi/src/main/java9/module-info.class differ