diff --git a/lib/Doctrine/ORM/UnitOfWork.php b/lib/Doctrine/ORM/UnitOfWork.php
index 25b657304..96570971c 100644
--- a/lib/Doctrine/ORM/UnitOfWork.php
+++ b/lib/Doctrine/ORM/UnitOfWork.php
@@ -483,6 +483,8 @@ class UnitOfWork implements PropertyChangedListener
             $this->entityChangeSets[$oid] = $changeset;
             $this->getEntityPersister(get_class($entity))->update($entity);
         }
+
+        $this->extraUpdates = array();
     }
 
     /**
diff --git a/tests/Doctrine/Tests/ORM/Functional/Ticket/DDC3123Test.php b/tests/Doctrine/Tests/ORM/Functional/Ticket/DDC3123Test.php
new file mode 100644
index 000000000..25c38426c
--- /dev/null
+++ b/tests/Doctrine/Tests/ORM/Functional/Ticket/DDC3123Test.php
@@ -0,0 +1,48 @@
+<?php
+
+namespace Doctrine\Tests\ORM\Functional\Ticket;
+
+use Doctrine\ORM\Events;
+use Doctrine\Tests\Models\CMS\CmsUser;
+
+/**
+ * @group DDC-3123
+ */
+class DDC3123Test extends \Doctrine\Tests\OrmFunctionalTestCase
+{
+    protected function setUp()
+    {
+        $this->useModelSet('cms');
+        parent::setUp();
+    }
+
+    public function testIssue()
+    {
+        $test = $this;
+        $user = new CmsUser();
+        $uow  = $this->_em->getUnitOfWork();
+
+        $user->name     = 'Marco';
+        $user->username = 'ocramius';
+
+        $this->_em->persist($user);
+        $uow->scheduleExtraUpdate($user, array('name' => 'changed name'));
+
+        $listener = $this->getMock('stdClass', array('postFlush'));
+
+        $listener
+            ->expects($this->once())
+            ->method('postFlush')
+            ->will($this->returnCallback(function () use ($uow, $test) {
+                $extraUpdatesReflection = new \ReflectionProperty($uow, 'extraUpdates');
+
+                $extraUpdatesReflection->setAccessible(true);
+
+                $test->assertEmpty($extraUpdatesReflection->getValue($uow));
+            }));
+
+        $this->_em->getEventManager()->addEventListener(Events::postFlush, $listener);
+
+        $this->_em->flush();
+    }
+}