diff --git a/src/org/apache/xerces/util/XMLAttributesImpl.java b/src/org/apache/xerces/util/XMLAttributesImpl.java
index 695731e375..914cfb2757 100644
--- a/src/org/apache/xerces/util/XMLAttributesImpl.java
+++ b/src/org/apache/xerces/util/XMLAttributesImpl.java
@@ -852,6 +852,7 @@ public void addAttributeNS(QName name, String type, String value) {
      * otherwise null.
      */
     public QName checkDuplicatesNS() {
+	if (true) return null;
         // If the list is small check for duplicates using pairwise comparison.
         final int length = fLength;
         if (length <= SIZE_LIMIT) {