diff --git a/poi-examples/src/main/java/org/apache/poi/examples/xssf/eventusermodel/XLSX2CSV.java b/poi-examples/src/main/java/org/apache/poi/examples/xssf/eventusermodel/XLSX2CSV.java
index 77a1b113e8..84885b48d3 100644
--- a/poi-examples/src/main/java/org/apache/poi/examples/xssf/eventusermodel/XLSX2CSV.java
+++ b/poi-examples/src/main/java/org/apache/poi/examples/xssf/eventusermodel/XLSX2CSV.java
@@ -201,7 +201,9 @@ public class XLSX2CSV {
             SharedStrings strings,
             SheetContentsHandler sheetHandler,
             InputStream sheetInputStream) throws IOException, SAXException {
-        //set emulateCSV=true on DataFormatter - it is also possible to provide a Locale
+        // set emulateCSV=true on DataFormatter - it is also possible to provide a Locale
+        // when POI 5.2.0 is released, you can call formatter.setUse4DigitYearsInAllDateFormats(true)
+        // to ensure all dates are formatted with 4 digit years
         DataFormatter formatter = new DataFormatter(true);
         InputSource sheetSource = new InputSource(sheetInputStream);
         try {