diff --git a/lib/api/ktcmis/classes/CMISPropertyCollection.inc.php b/lib/api/ktcmis/classes/CMISPropertyCollection.inc.php
index 210d691..22dbd63 100644
--- a/lib/api/ktcmis/classes/CMISPropertyCollection.inc.php
+++ b/lib/api/ktcmis/classes/CMISPropertyCollection.inc.php
@@ -46,6 +46,7 @@
 abstract class CMISPropertyCollection {
 
     static $ObjectId;
+    static $BaseType;
     static $URI;
     static $ObjectTypeId;
     static $CreatedBy;
@@ -59,11 +60,15 @@ abstract class CMISPropertyCollection {
 
     function __construct()
     {
-        $this->propertyTypes = array('ObjectId' => 'propertyId', 'BaseType' => 'propertyString',
-                                  'ObjectTypeId' => 'propertyString', 'CreatedBy' => 'propertyString',
-                                  'CreationDate' => 'propertyDateTime', 'LastModifiedBy' => 'propertyString',
-                                  'LastModificationDate' => 'propertyDateTime', 'Name' => 'propertyString',
-                                  'ParentId' => 'propertyId');
+        $this->propertyTypes = array('ObjectId' => 'propertyId',
+                                    'BaseType' => 'propertyString',
+                                    'ObjectTypeId' => 'propertyString',
+                                    'CreatedBy' => 'propertyString',
+                                    'CreationDate' => 'propertyDateTime',
+                                    'LastModifiedBy' => 'propertyString',
+                                    'LastModificationDate' => 'propertyDateTime',
+                                    'Name' => 'propertyString',
+                                    'ParentId' => 'propertyId');
     }
 
     /**
diff --git a/lib/api/ktcmis/objecttypes/CMISDocumentObject.inc.php b/lib/api/ktcmis/objecttypes/CMISDocumentObject.inc.php
index 8b5b8f2..99ef152 100644
--- a/lib/api/ktcmis/objecttypes/CMISDocumentObject.inc.php
+++ b/lib/api/ktcmis/objecttypes/CMISDocumentObject.inc.php
@@ -119,6 +119,8 @@ class CMISDocumentObject extends CMISBaseObject {
         $this->_setPropertyInternal('URI', $uri);
         // TODO what is this?  Assuming it is the object type id, and not OUR document type?
         $this->_setPropertyInternal('ObjectTypeId', $this->getAttribute('typeId'));
+        // Needed to distinguish type
+        $this->_setPropertyInternal('BaseType', strtolower($this->getAttribute('typeId')));
         $this->_setPropertyInternal('CreatedBy', $objectProperties['created_by']);
         $this->_setPropertyInternal('CreationDate', $objectProperties['created_date']);
         $this->_setPropertyInternal('LastModifiedBy', $objectProperties['modified_by']);
diff --git a/lib/api/ktcmis/objecttypes/CMISFolderObject.inc.php b/lib/api/ktcmis/objecttypes/CMISFolderObject.inc.php
index 93e542c..a2e6408 100644
--- a/lib/api/ktcmis/objecttypes/CMISFolderObject.inc.php
+++ b/lib/api/ktcmis/objecttypes/CMISFolderObject.inc.php
@@ -97,6 +97,8 @@ class CMISFolderObject extends CMISBaseObject {
         $this->_setPropertyInternal('URI', $uri);
         // TODO what is this?  Assuming it is the object type id, and not OUR document type?
         $this->_setPropertyInternal('ObjectTypeId', $this->getAttribute('typeId'));
+        // Needed to distinguish type
+        $this->_setPropertyInternal('BaseType', strtolower($this->getAttribute('typeId')));
         $this->_setPropertyInternal('CreatedBy', $objectProperties['created_by']);
         // TODO cannot currently retrieve via ktapi or regular folder code - add as with created by
         $this->_setPropertyInternal('CreationDate', $objectProperties['created_date']);
diff --git a/lib/api/ktcmis/util/CMISUtil.inc.php b/lib/api/ktcmis/util/CMISUtil.inc.php
index 49342f3..af79356 100644
--- a/lib/api/ktcmis/util/CMISUtil.inc.php
+++ b/lib/api/ktcmis/util/CMISUtil.inc.php
@@ -224,6 +224,8 @@ class CMISUtil {
             // TODO additional properties to be returned
             $hierarchy[$key]['properties']['ObjectId'] = array('type' => $properties->getFieldType('ObjectId'),
                                                                'value' => $properties->getValue('ObjectId'));
+            $hierarchy[$key]['properties']['BaseType'] = array('type' => $properties->getFieldType('BaseType'),
+                                                               'value' => $properties->getValue('BaseType'));
             $hierarchy[$key]['properties']['ObjectTypeId'] = array('type' => $properties->getFieldType('ObjectTypeId'),
                                                                'value' => $properties->getValue('ObjectTypeId'));
             $hierarchy[$key]['properties']['Name'] = array('type' => $properties->getFieldType('Name'),