diff --git a/lib/Doctrine/ORM/Mapping/Driver/XmlDriver.php b/lib/Doctrine/ORM/Mapping/Driver/XmlDriver.php
index f32ada9a0..54087880a 100644
--- a/lib/Doctrine/ORM/Mapping/Driver/XmlDriver.php
+++ b/lib/Doctrine/ORM/Mapping/Driver/XmlDriver.php
@@ -85,7 +85,11 @@ class XmlDriver extends AbstractFileDriver
 
         // Evaluate <discriminator-map...>
         if (isset($xmlRoot->{'discriminator-map'})) {
-            $metadata->setDiscriminatorMap((array)$xmlRoot->{'discriminator-map'});
+            $map = array();
+            foreach ($xmlRoot->{'discriminator-map'}->{'discriminator-mapping'} AS $discrMapElement) {
+                $map[(string)$discrMapElement['value']] = (string)$discrMapElement['class'];
+            }
+            $metadata->setDiscriminatorMap($map);
         }
 
         // Evaluate <change-tracking-policy...>
diff --git a/tests/Doctrine/Tests/ORM/Mapping/XmlMappingDriverTest.php b/tests/Doctrine/Tests/ORM/Mapping/XmlMappingDriverTest.php
index 7e9c78edf..d41e01eed 100644
--- a/tests/Doctrine/Tests/ORM/Mapping/XmlMappingDriverTest.php
+++ b/tests/Doctrine/Tests/ORM/Mapping/XmlMappingDriverTest.php
@@ -14,4 +14,31 @@ class XmlMappingDriverTest extends AbstractMappingDriverTest
     {
         return new XmlDriver(__DIR__ . DIRECTORY_SEPARATOR . 'xml');
     }
-}
\ No newline at end of file
+
+    public function testClassTableInheritanceDiscriminatorMap()
+    {
+        $className = 'Doctrine\Tests\ORM\Mapping\CTI';
+        $mappingDriver = $this->_loadDriver();
+
+        $class = new ClassMetadata($className);
+        $mappingDriver->loadMetadataForClass($className, $class);
+
+        $expectedMap = array(
+            "foo" => "Doctrine\Tests\ORM\Mapping\CTIFoo",
+            "bar" => "Doctrine\Tests\ORM\Mapping\CTIBar",
+            "baz" => "Doctrine\Tests\ORM\Mapping\CTIBaz",
+        );
+
+        $this->assertEquals(3, count($class->discriminatorMap));
+        $this->assertEquals($expectedMap, $class->discriminatorMap);
+    }
+}
+
+class CTI
+{
+    public $id;
+}
+
+class CTIFoo extends CTI {}
+class CTIBar extends CTI {}
+class CTIBaz extends CTI {}
\ No newline at end of file
diff --git a/tests/Doctrine/Tests/ORM/Mapping/xml/Doctrine.Tests.ORM.Mapping.CTI.dcm.xml b/tests/Doctrine/Tests/ORM/Mapping/xml/Doctrine.Tests.ORM.Mapping.CTI.dcm.xml
new file mode 100644
index 000000000..9c8c8f98e
--- /dev/null
+++ b/tests/Doctrine/Tests/ORM/Mapping/xml/Doctrine.Tests.ORM.Mapping.CTI.dcm.xml
@@ -0,0 +1,16 @@
+<?xml version="1.0" encoding="UTF-8"?>
+<doctrine-mapping xmlns="http://doctrine-project.org/schemas/orm/doctrine-mapping"
+              xsi="http://www.w3.org/2001/XMLSchema-instance"
+              schemaLocation="http://doctrine-project.org/schemas/orm/doctrine-mapping.xsd">
+    <entity name="Doctrine\Tests\ORM\Mapping\CTI">
+        <discriminiator-column name="discr" type="string" length=""/>
+        <discriminator-map>
+            <discriminator-mapping value="foo" class="CTIFoo"/>
+            <discriminator-mapping value="bar" class="CTIBar"/>
+            <discriminator-mapping value="baz" class="CTIBaz"/>
+        </discriminator-map>
+        <id name="id" type="integer" column="id">
+            <generator strategy="AUTO"/>
+        </id>
+    </entity>
+</doctrine-mapping>
\ No newline at end of file