diff --git a/doctrine-mapping.xsd b/doctrine-mapping.xsd
index 89c11a894..f9c774d57 100644
--- a/doctrine-mapping.xsd
+++ b/doctrine-mapping.xsd
@@ -37,6 +37,7 @@
       <xs:element name="cascade-merge" type="orm:emptyType" minOccurs="0"/> 
       <xs:element name="cascade-remove" type="orm:emptyType" minOccurs="0"/> 
       <xs:element name="cascade-refresh" type="orm:emptyType" minOccurs="0"/> 
+      <xs:element name="cascade-detach" type="orm:emptyType" minOccurs="0"/>
       <xs:any minOccurs="0" maxOccurs="unbounded" namespace="##other"/>
     </xs:sequence>
     <xs:anyAttribute namespace="##other"/>
@@ -86,8 +87,11 @@
   </xs:complexType>
 
   <xs:complexType name="named-native-query">
+    <xs:sequence>
+      <xs:element name="query" type="xs:string" minOccurs="1" maxOccurs="1"/>
+      <xs:any minOccurs="0" maxOccurs="unbounded" namespace="##other"/>
+    </xs:sequence>
     <xs:attribute name="name" type="xs:string" use="required" />
-    <xs:attribute name="query" type="xs:string" use="required"/>
     <xs:attribute name="result-class" type="xs:string" />
     <xs:attribute name="result-set-mapping" type="xs:string" />
   </xs:complexType>
@@ -95,14 +99,14 @@
   <xs:complexType name="named-native-queries">
     <xs:sequence>
       <xs:element name="named-native-query" type="orm:named-native-query" minOccurs="1" maxOccurs="unbounded" />
-      <xs:any minOccurs="1" maxOccurs="unbounded" namespace="##other"/>
+      <xs:any minOccurs="0" maxOccurs="unbounded" namespace="##other"/>
     </xs:sequence>
   </xs:complexType>
 
   <xs:complexType name="entity-listener">
     <xs:sequence>
       <xs:element name="lifecycle-callback" type="orm:lifecycle-callback" minOccurs="0" maxOccurs="unbounded"/>
-      <xs:any minOccurs="1" maxOccurs="unbounded" namespace="##other"/>
+      <xs:any minOccurs="0" maxOccurs="unbounded" namespace="##other"/>
     </xs:sequence>
     <xs:attribute name="class" type="xs:string"/>
   </xs:complexType>
@@ -127,20 +131,24 @@
       <xs:element name="field-result" type="orm:field-result" minOccurs="0" maxOccurs="unbounded" />
     </xs:sequence>
     <xs:attribute name="entity-class" type="xs:string" use="required" />
+    <xs:attribute name="discriminator-column" type="xs:string" use="optional" />
   </xs:complexType>
 
   <xs:complexType name="sql-result-set-mapping">
     <xs:sequence>
-      <xs:element name="entity-result" type="orm:entity-result" minOccurs="0" maxOccurs="unbounded" />
-      <xs:element name="column-result" type="orm:column-result" minOccurs="0" maxOccurs="unbounded" />
-      <xs:any minOccurs="1" maxOccurs="unbounded" namespace="##other"/>
+        <xs:choice minOccurs="0" maxOccurs="unbounded">
+            <xs:element name="entity-result" type="orm:entity-result"/>
+            <xs:element name="column-result" type="orm:column-result"/>
+            <xs:any minOccurs="0" maxOccurs="unbounded" namespace="##other"/>
+        </xs:choice>
+        <xs:any minOccurs="0" maxOccurs="unbounded" namespace="##other"/>
     </xs:sequence>
+    <xs:attribute name="name" type="xs:string" use="required" />
   </xs:complexType>
 
   <xs:complexType name="sql-result-set-mappings">
     <xs:sequence>
       <xs:element name="sql-result-set-mapping" type="orm:sql-result-set-mapping" minOccurs="1" maxOccurs="unbounded" />
-      <xs:any minOccurs="1" maxOccurs="unbounded" namespace="##other"/>
     </xs:sequence>
   </xs:complexType>
 
@@ -155,6 +163,7 @@
       <xs:element name="entity-listeners" type="orm:entity-listeners" minOccurs="0" maxOccurs="1" />
       <xs:element name="named-queries" type="orm:named-queries" minOccurs="0" maxOccurs="1" />
       <xs:element name="named-native-queries" type="orm:named-native-queries" minOccurs="0" maxOccurs="1" />
+      <xs:element name="sql-result-set-mappings" type="orm:sql-result-set-mappings" minOccurs="0" maxOccurs="unbounded" />
       <xs:element name="id" type="orm:id" minOccurs="0" maxOccurs="unbounded" />
       <xs:element name="field" type="orm:field" minOccurs="0" maxOccurs="unbounded"/>
       <xs:element name="one-to-one" type="orm:one-to-one" minOccurs="0" maxOccurs="unbounded"/>
@@ -221,6 +230,7 @@
   
   <xs:simpleType name="generator-strategy"> 
     <xs:restriction base="xs:token"> 
+      <xs:enumeration value="NONE"/>
       <xs:enumeration value="TABLE"/> 
       <xs:enumeration value="SEQUENCE"/> 
       <xs:enumeration value="IDENTITY"/> 
@@ -380,7 +390,7 @@
     <xs:sequence>
       <xs:any minOccurs="0" maxOccurs="unbounded" namespace="##other"/>
     </xs:sequence>
-    <xs:attribute name="name" type="xs:NMTOKEN" use="required" />
+    <xs:attribute name="name" type="xs:NMTOKEN" use="optional" />
     <xs:attribute name="referenced-column-name" type="xs:NMTOKEN" use="optional" default="id" />
     <xs:attribute name="unique" type="xs:boolean" default="false" />
     <xs:attribute name="nullable" type="xs:boolean" default="true" />
@@ -505,7 +515,7 @@
   <xs:complexType name="association-overrides">
     <xs:sequence>
       <xs:element name="association-override" type="orm:association-override" minOccurs="1" maxOccurs="unbounded" />
-      <xs:any minOccurs="1" maxOccurs="unbounded" namespace="##other"/>
+      <xs:any minOccurs="0" maxOccurs="unbounded" namespace="##other"/>
     </xs:sequence>
   </xs:complexType>
 
@@ -521,16 +531,33 @@
   <xs:complexType name="attribute-overrides">
     <xs:sequence>
       <xs:element name="attribute-override" type="orm:attribute-override" minOccurs="1" maxOccurs="unbounded" />
-      <xs:any minOccurs="1" maxOccurs="unbounded" namespace="##other"/>
+      <xs:any minOccurs="0" maxOccurs="unbounded" namespace="##other"/>
     </xs:sequence>
   </xs:complexType>
 
   <xs:complexType name="attribute-override">
     <xs:sequence>
-      <xs:element name="field" type="orm:field" minOccurs="1" />
-      <xs:any minOccurs="1" maxOccurs="unbounded" namespace="##other"/>
+      <xs:element name="field" type="orm:attribute-override-field" minOccurs="1" />
+      <xs:any minOccurs="0" maxOccurs="unbounded" namespace="##other"/>
     </xs:sequence>
     <xs:attribute name="name" type="xs:NMTOKEN" use="required" />
   </xs:complexType>
 
+  <xs:complexType name="attribute-override-field">
+    <xs:sequence>
+      <xs:element name="options" type="orm:options" minOccurs="0" />
+      <xs:any minOccurs="0" maxOccurs="unbounded" namespace="##other"/>
+    </xs:sequence>
+    <xs:attribute name="type" type="xs:NMTOKEN" default="string" />
+    <xs:attribute name="column" type="xs:NMTOKEN" />
+    <xs:attribute name="length" type="xs:NMTOKEN" />
+    <xs:attribute name="unique" type="xs:boolean" default="false" />
+    <xs:attribute name="nullable" type="xs:boolean" default="false" />
+    <xs:attribute name="version" type="xs:boolean" />
+    <xs:attribute name="column-definition" type="xs:string" />
+    <xs:attribute name="precision" type="xs:integer" use="optional" />
+    <xs:attribute name="scale" type="xs:integer" use="optional" />
+    <xs:anyAttribute namespace="##other"/>
+  </xs:complexType>
+
 </xs:schema>
diff --git a/tests/Doctrine/Tests/ORM/Mapping/XmlMappingDriverTest.php b/tests/Doctrine/Tests/ORM/Mapping/XmlMappingDriverTest.php
index e69f23a35..42b871f1e 100644
--- a/tests/Doctrine/Tests/ORM/Mapping/XmlMappingDriverTest.php
+++ b/tests/Doctrine/Tests/ORM/Mapping/XmlMappingDriverTest.php
@@ -66,23 +66,32 @@ class XmlMappingDriverTest extends AbstractMappingDriverTest
     /**
      * @param string $xmlMappingFile
      * @dataProvider dataValidSchema
+     * @group DDC-2429
      */
     public function testValidateXmlSchema($xmlMappingFile)
     {
-        $xsdSchemaFile = __DIR__ . "/../../../../../doctrine-mapping.xsd";
+        $xsdSchemaFile  = __DIR__ . '/../../../../../doctrine-mapping.xsd';
+        $dom            = new \DOMDocument('UTF-8');
 
-        $dom = new \DOMDocument('UTF-8');
         $dom->load($xmlMappingFile);
+
         $this->assertTrue($dom->schemaValidate($xsdSchemaFile));
     }
 
     static public function dataValidSchema()
     {
-        return array(
-            array(__DIR__ . "/xml/Doctrine.Tests.ORM.Mapping.CTI.dcm.xml"),
-            array(__DIR__ . "/xml/Doctrine.Tests.ORM.Mapping.User.dcm.xml"),
-            array(__DIR__ . "/xml/CatNoId.dcm.xml"),
+        $list    = glob(__DIR__ . '/xml/*.xml');
+        $invalid = array(
+            'Doctrine.Tests.Models.DDC889.DDC889Class.dcm'
         );
+
+        $list = array_filter($list, function($item) use ($invalid){
+            return ! in_array(pathinfo($item, PATHINFO_FILENAME), $invalid);
+        });
+
+        return array_map(function($item){
+            return array($item);
+        }, $list);
     }
 
     /**
diff --git a/tests/Doctrine/Tests/ORM/Mapping/xml/DDC2429Book.orm.xml b/tests/Doctrine/Tests/ORM/Mapping/xml/DDC2429Book.orm.xml
new file mode 100644
index 000000000..8640c6f51
--- /dev/null
+++ b/tests/Doctrine/Tests/ORM/Mapping/xml/DDC2429Book.orm.xml
@@ -0,0 +1,40 @@
+<?xml version="1.0" encoding="UTF-8"?>
+<doctrine-mapping xmlns="http://doctrine-project.org/schemas/orm/doctrine-mapping"
+                  xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
+                  xsi:schemaLocation="http://doctrine-project.org/schemas/orm/doctrine-mapping
+                  https://raw.github.com/doctrine/doctrine2/master/doctrine-mapping.xsd">
+
+    <mapped-superclass name="SocialLibrary\ReadBundle\Entity\Book">
+        <id name="id" type="integer">
+            <generator strategy="AUTO" />
+        </id>
+        <field name="volume" column="volume" type="integer" nullable="true" />
+        <field name="language" column="language" type="string" length="8" nullable="true" />
+        <field name="isbn10" column="isbn10" type="string" length="11" unique="true" nullable="true" />
+        <field name="isbn13" column="isbn13" type="string" length="14" unique="true" nullable="true" />
+        <many-to-one field="serie" target-entity="SocialLibrary\ReadBundle\Entity\Serie" inversed-by="volumes">
+            <join-column name="serie_id" referenced-column-name="id" />
+        </many-to-one>
+        <many-to-many field="owners" target-entity="Application\Sonata\UserBundle\Entity\User">
+            <join-table name="book__owner">
+                <join-columns>
+                    <join-column name="object_id" referenced-column-name="id" />
+                </join-columns>
+                <inverse-join-columns>
+                    <join-column name="owner_id" referenced-column-name="id" />
+                </inverse-join-columns>
+            </join-table>
+        </many-to-many>
+        <many-to-many field="creators" target-entity="SocialLibrary\BaseBundle\Entity\ObjectCreator">
+            <join-table name="book__creator">
+                <join-columns>
+                    <join-column name="object_id" referenced-column-name="id" />
+                </join-columns>
+                <inverse-join-columns>
+                    <join-column name="creator_id" referenced-column-name="id" />
+                </inverse-join-columns>
+            </join-table>
+        </many-to-many>
+    </mapped-superclass>
+
+</doctrine-mapping>
diff --git a/tests/Doctrine/Tests/ORM/Mapping/xml/DDC2429Novel.orm.xml b/tests/Doctrine/Tests/ORM/Mapping/xml/DDC2429Novel.orm.xml
new file mode 100644
index 000000000..43ce94285
--- /dev/null
+++ b/tests/Doctrine/Tests/ORM/Mapping/xml/DDC2429Novel.orm.xml
@@ -0,0 +1,42 @@
+<doctrine-mapping xmlns="http://doctrine-project.org/schemas/orm/doctrine-mapping"
+     xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
+     xsi:schemaLocation="http://doctrine-project.org/schemas/orm/doctrine-mapping
+                         http://doctrine-project.org/schemas/orm/doctrine-mapping.xsd">
+
+    <entity name="SocialLibrary\ReadBundle\Entity\Novel" table="novel__novel" repository-class="SocialLibrary\ReadBundle\Repository\NovelRepository">
+        <association-overrides>
+            <association-override name="owners">
+                <join-table name="novel__owner">
+                    <join-columns>
+                        <join-column name="object_id" />
+                    </join-columns>
+                    <inverse-join-columns>
+                        <join-column name="owner_id" />
+                    </inverse-join-columns>
+                </join-table>
+            </association-override>
+            <association-override name="creators">
+                <join-table name="novel__creator">
+                    <join-columns>
+                        <join-column name="object_id" />
+                    </join-columns>
+                    <inverse-join-columns>
+                        <join-column name="creator_id" />
+                    </inverse-join-columns>
+                </join-table>
+            </association-override>
+            <association-override name="serie">
+                <join-columns>
+                    <join-column name="novel_serie_id" referenced-column-name="id" />
+                </join-columns>
+            </association-override>
+        </association-overrides>
+
+        <attribute-overrides>
+            <attribute-override name="volume">
+                <field column="novel__volume" type="integer" nullable="true" />
+            </attribute-override>
+        </attribute-overrides>
+    </entity>
+
+</doctrine-mapping>
\ No newline at end of file
diff --git a/tests/Doctrine/Tests/ORM/Mapping/xml/Doctrine.Tests.Models.CMS.CmsAddress.dcm.xml b/tests/Doctrine/Tests/ORM/Mapping/xml/Doctrine.Tests.Models.CMS.CmsAddress.dcm.xml
index b35569ae4..7e7bd5aaa 100644
--- a/tests/Doctrine/Tests/ORM/Mapping/xml/Doctrine.Tests.Models.CMS.CmsAddress.dcm.xml
+++ b/tests/Doctrine/Tests/ORM/Mapping/xml/Doctrine.Tests.Models.CMS.CmsAddress.dcm.xml
@@ -1,12 +1,10 @@
-<?xml version="1.0" encoding="UTF-8"?>
-
 <doctrine-mapping xmlns="http://doctrine-project.org/schemas/orm/doctrine-mapping"
-      xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
-      xsi:schemaLocation="http://doctrine-project.org/schemas/orm/doctrine-mapping
-                          http://www.doctrine-project.org/schemas/orm/doctrine-mapping.xsd">
-                              
-    <entity name="Doctrine\Tests\Models\CMS\CmsAddress" table="cms_users">
+                  xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
+                  xsi:schemaLocation="http://doctrine-project.org/schemas/orm/doctrine-mapping
+                         http://doctrine-project.org/schemas/orm/doctrine-mapping.xsd">
 
+    <entity name="Doctrine\Tests\Models\CMS\CmsAddress" table="cms_users">
+        
         <entity-listeners>
             <entity-listener class="CmsAddressListener"/>
         </entity-listeners>
@@ -15,7 +13,7 @@
             <named-native-query name="find-all" result-set-mapping="mapping-find-all">
                 <query>SELECT id, country, city FROM cms_addresses</query>
             </named-native-query>
-            
+
             <named-native-query name="find-by-id" result-class="CmsAddress">
                 <query>SELECT * FROM cms_addresses WHERE id = ?</query>
             </named-native-query>
@@ -46,7 +44,7 @@
         <id name="id" type="integer" column="id">
             <generator strategy="AUTO"/>
         </id>
-        
+
         <field name="country" column="country" type="string" length="50"/>
         <field name="city" column="city" type="string" length="50"/>
         <field name="zip" column="zip" type="string" length="50"/>
@@ -54,6 +52,7 @@
         <one-to-one field="user" target-entity="CmsUser" inversed-by="address">
             <join-column referenced-column-name="id" />
         </one-to-one>
-        
+
     </entity>
+
 </doctrine-mapping>
\ No newline at end of file
diff --git a/tests/Doctrine/Tests/ORM/Mapping/xml/Doctrine.Tests.Models.CMS.CmsUser.dcm.xml b/tests/Doctrine/Tests/ORM/Mapping/xml/Doctrine.Tests.Models.CMS.CmsUser.dcm.xml
index 64a545df6..122a45e6f 100644
--- a/tests/Doctrine/Tests/ORM/Mapping/xml/Doctrine.Tests.Models.CMS.CmsUser.dcm.xml
+++ b/tests/Doctrine/Tests/ORM/Mapping/xml/Doctrine.Tests.Models.CMS.CmsUser.dcm.xml
@@ -15,7 +15,7 @@
             <named-native-query name="fetchIdAndUsernameWithResultClass" result-class="CmsUser">
                 <query>SELECT id, username FROM cms_users WHERE username = ?</query>
             </named-native-query>
-            
+
             <named-native-query name="fetchAllColumns" result-class="CmsUser">
                 <query>SELECT * FROM cms_users WHERE username = ?</query>
             </named-native-query>
@@ -90,20 +90,7 @@
         <field name="status" column="status" type="string" length="50" unique="true"/>
         <field name="username" column="username" type="string" length="255" unique="true"/>
         <field name="name" column="name" type="string" length="255"/>
-        
-        <one-to-many field="phonenumbers" target-entity="CmsPhonenumber" mapped-by="user" orphan-removal="true">
-            <cascade>
-                <cascade-persist/>
-                <cascade-merge/>
-            </cascade>
-        </one-to-many>
 
-        <one-to-many field="articles" target-entity="CmsArticle" mapped-by="user">
-            <cascade>
-                <cascade-detach/>
-            </cascade>
-        </one-to-many>
-        
         <one-to-one field="address" target-entity="CmsAddress" inversed-by="user" orphan-removal="true">
             <cascade>
                 <cascade-persist/>
@@ -117,12 +104,25 @@
             </cascade>
             <join-column referenced-column-name="id" nullable="true" />
         </one-to-one>
+
+        <one-to-many field="phonenumbers" target-entity="CmsPhonenumber" mapped-by="user" orphan-removal="true">
+            <cascade>
+                <cascade-persist/>
+                <cascade-merge/>
+            </cascade>
+        </one-to-many>
+
+        <one-to-many field="articles" target-entity="CmsArticle" mapped-by="user">
+            <cascade>
+                <cascade-detach/>
+            </cascade>
+        </one-to-many>
         
         <many-to-many field="groups" target-entity="CmsGroup">
             <cascade>
                 <cascade-persist/>
-                <cascade-detach/>
                 <cascade-merge/>
+                <cascade-detach/>
             </cascade>
             <join-table name="cms_users_groups">
                 <join-columns>
@@ -133,7 +133,7 @@
                 </inverse-join-columns>
             </join-table>
         </many-to-many>
-        
+
     </entity>
 
 </doctrine-mapping>
diff --git a/tests/Doctrine/Tests/ORM/Mapping/xml/Doctrine.Tests.Models.Company.CompanyPerson.dcm.xml b/tests/Doctrine/Tests/ORM/Mapping/xml/Doctrine.Tests.Models.Company.CompanyPerson.dcm.xml
index c573504e0..2ddd88a32 100644
--- a/tests/Doctrine/Tests/ORM/Mapping/xml/Doctrine.Tests.Models.Company.CompanyPerson.dcm.xml
+++ b/tests/Doctrine/Tests/ORM/Mapping/xml/Doctrine.Tests.Models.Company.CompanyPerson.dcm.xml
@@ -7,6 +7,12 @@
                               
     <entity name="Doctrine\Tests\Models\Company\CompanyPerson" table="company_persons" inheritance-type="JOINED">
 
+        <discriminator-map >
+            <discriminator-mapping value="person"   class="CompanyPerson" />
+            <discriminator-mapping value="manager"  class="CompanyManager" />
+            <discriminator-mapping value="employee" class="CompanyEmployee" />
+        </discriminator-map>
+
         <named-native-queries>
             <named-native-query name="fetchAllWithResultClass" result-class="__CLASS__">
                 <query>SELECT id, name, discr FROM company_persons ORDER BY name</query>
@@ -26,12 +32,6 @@
             </sql-result-set-mapping>
         </sql-result-set-mappings>
         
-        <discriminator-map >
-            <discriminator-mapping value="person"   class="CompanyPerson" />
-            <discriminator-mapping value="manager"  class="CompanyManager" />
-            <discriminator-mapping value="employee" class="CompanyEmployee" />
-        </discriminator-map>
-
         <id name="id" type="integer" column="id">
             <generator strategy="AUTO"/>
         </id>
diff --git a/tests/Doctrine/Tests/ORM/Mapping/xml/Doctrine.Tests.Models.DDC117.DDC117Translation.dcm.xml b/tests/Doctrine/Tests/ORM/Mapping/xml/Doctrine.Tests.Models.DDC117.DDC117Translation.dcm.xml
index c0df0886a..ec3bc74fd 100644
--- a/tests/Doctrine/Tests/ORM/Mapping/xml/Doctrine.Tests.Models.DDC117.DDC117Translation.dcm.xml
+++ b/tests/Doctrine/Tests/ORM/Mapping/xml/Doctrine.Tests.Models.DDC117.DDC117Translation.dcm.xml
@@ -5,18 +5,19 @@
                           http://www.doctrine-project.org/schemas/orm/doctrine-mapping.xsd">
 
     <entity name="Doctrine\Tests\Models\DDC117\DDC117Translation">
-        <many-to-one field="article" target-entity="DDC117Article">
-            <join-column name="article_id" referenced-column-name="article_id" />
-        </many-to-one>
-
-        <many-to-many field="reviewedByEditors" target-entity="DDC117Editor" mapped-by="reviewingTranslations" />
-
-        <one-to-many field="lastTranslatedBy" target-entity="DDC117Editor" mapped-by="lastTranslation" />
 
         <id name="article" association-key="true" />
         <id name="language" type="string" />
 
         <field name="title" type="string" />
+
+        <one-to-many field="lastTranslatedBy" target-entity="DDC117Editor" mapped-by="lastTranslation" />
+
+        <many-to-one field="article" target-entity="DDC117Article">
+            <join-column name="article_id" referenced-column-name="article_id" />
+        </many-to-one>
+
+        <many-to-many field="reviewedByEditors" target-entity="DDC117Editor" mapped-by="reviewingTranslations" />
     </entity>
 
 </doctrine-mapping>
\ No newline at end of file
diff --git a/tests/Doctrine/Tests/ORM/Mapping/xml/Doctrine.Tests.ORM.Mapping.Animal.dcm.xml b/tests/Doctrine/Tests/ORM/Mapping/xml/Doctrine.Tests.ORM.Mapping.Animal.dcm.xml
index 3f67a6b82..a4c4e9bfd 100644
--- a/tests/Doctrine/Tests/ORM/Mapping/xml/Doctrine.Tests.ORM.Mapping.Animal.dcm.xml
+++ b/tests/Doctrine/Tests/ORM/Mapping/xml/Doctrine.Tests.ORM.Mapping.Animal.dcm.xml
@@ -4,11 +4,11 @@
       xsi:schemaLocation="http://doctrine-project.org/schemas/orm/doctrine-mapping
                           http://www.doctrine-project.org/schemas/orm/doctrine-mapping.xsd">
     <entity name="Doctrine\Tests\ORM\Mapping\Animal" inheritance-type="SINGLE_TABLE">
+        <discriminator-column name="discr" type="string" length="32" />
         <discriminator-map>
             <discriminator-mapping value="cat" class="Cat" />
             <discriminator-mapping value="dog" class="Dog" />
         </discriminator-map>
-        <discriminator-column name="discr" type="string" length="32" />
         <id name="id" type="integer" column="id">
             <generator strategy="CUSTOM" />
             <custom-id-generator class="stdClass" />
diff --git a/tests/Doctrine/Tests/ORM/Mapping/xml/Doctrine.Tests.ORM.Mapping.DDC807Entity.dcm.xml b/tests/Doctrine/Tests/ORM/Mapping/xml/Doctrine.Tests.ORM.Mapping.DDC807Entity.dcm.xml
index 3dc9135c5..82711dc2f 100644
--- a/tests/Doctrine/Tests/ORM/Mapping/xml/Doctrine.Tests.ORM.Mapping.DDC807Entity.dcm.xml
+++ b/tests/Doctrine/Tests/ORM/Mapping/xml/Doctrine.Tests.ORM.Mapping.DDC807Entity.dcm.xml
@@ -5,16 +5,16 @@
                           http://www.doctrine-project.org/schemas/orm/doctrine-mapping.xsd">
                               
     <entity name="Doctrine\Tests\ORM\Mapping\DDC807Entity" inheritance-type="SINGLE_TABLE">
-        <id name="id">
-            <generator strategy="NONE"/>
-        </id>
-
         <discriminator-column name="dtype" column-definition="ENUM('ONE','TWO')"/>
         
         <discriminator-map>
             <discriminator-mapping value="ONE" class="DDC807SubClasse1" />
             <discriminator-mapping value="TWO" class="DDC807SubClasse1" />
         </discriminator-map>
+
+        <id name="id">
+            <generator strategy="NONE"/>
+        </id>
     </entity>
         
 </doctrine-mapping>
\ No newline at end of file