diff --git a/src/java/davmail/exchange/ews/ExtendedFieldURI.java b/src/java/davmail/exchange/ews/ExtendedFieldURI.java
index 702ba012..02193fa9 100644
--- a/src/java/davmail/exchange/ews/ExtendedFieldURI.java
+++ b/src/java/davmail/exchange/ews/ExtendedFieldURI.java
@@ -40,7 +40,6 @@ public class ExtendedFieldURI implements FieldURI {
 
     protected String propertyTag;
     protected DistinguishedPropertySetType distinguishedPropertySetId;
-    protected String propertySetId;
     protected String propertyName;
     protected int propertyId;
     protected final PropertyType propertyType;
@@ -102,9 +101,6 @@ public class ExtendedFieldURI implements FieldURI {
         if (distinguishedPropertySetId != null) {
             buffer.append(" DistinguishedPropertySetId=\"").append(distinguishedPropertySetId).append('"');
         }
-        if (propertySetId != null) {
-            buffer.append(" PropertySetId=\"").append(propertySetId).append('"');
-        }
         if (propertyName != null) {
             buffer.append(" PropertyName=\"").append(propertyName).append('"');
         }