diff --git a/lib/Doctrine/ORM/Tools/EntityGenerator.php b/lib/Doctrine/ORM/Tools/EntityGenerator.php
index 5a55f0fc9..405f954d2 100644
--- a/lib/Doctrine/ORM/Tools/EntityGenerator.php
+++ b/lib/Doctrine/ORM/Tools/EntityGenerator.php
@@ -709,6 +709,13 @@ public function __construct()
             }
         }
 
+        // check traits for existing property
+        foreach ($this->getTraits($metadata) as $trait) {
+            if ($trait->hasProperty($property)) {
+                return true;
+            }
+        }
+
         return (
             isset($this->staticReflection[$metadata->name]) &&
             in_array($property, $this->staticReflection[$metadata->name]['properties'])
@@ -732,12 +739,37 @@ public function __construct()
             }
         }
 
+        // check traits for existing method
+        foreach ($this->getTraits($metadata) as $trait) {
+            if ($trait->hasMethod($method)) {
+                return true;
+            }
+        }
+
         return (
             isset($this->staticReflection[$metadata->name]) &&
             in_array($method, $this->staticReflection[$metadata->name]['methods'])
         );
     }
 
+    /**
+     * @param ClassMetadataInfo $metadata
+     *
+     * @return array
+     */
+    protected function getTraits(ClassMetadataInfo $metadata)
+    {
+        if (PHP_VERSION_ID >= 50400 && ($metadata->reflClass !== null || class_exists($metadata->name))) {
+            $reflClass = $metadata->reflClass === null
+                ? new \ReflectionClass($metadata->name)
+                : $metadata->reflClass;
+
+            return $reflClass->getTraits();
+        }
+
+        return array();
+    }
+
     /**
      * @param ClassMetadataInfo $metadata
      *
diff --git a/tests/Doctrine/Tests/Models/DDC2372/DDC2372Address.php b/tests/Doctrine/Tests/Models/DDC2372/DDC2372Address.php
new file mode 100644
index 000000000..26144c61d
--- /dev/null
+++ b/tests/Doctrine/Tests/Models/DDC2372/DDC2372Address.php
@@ -0,0 +1,45 @@
+<?php
+
+namespace Doctrine\Tests\Models\DDC2372;
+
+/** @Entity @Table(name="addresses") */
+class DDC2372Address
+{
+    /**
+     * @Id @Column(type="integer")
+     * @GeneratedValue(strategy="AUTO")
+     */
+    private $id;
+    /** @Column(type="string", length=255) */
+    private $street;
+    /** @OneToOne(targetEntity="User", mappedBy="address") */
+    private $user;
+
+    public function getId()
+    {
+        return $this->id;
+    }
+
+    public function getStreet()
+    {
+        return $this->street;
+    }
+
+    public function setStreet($street)
+    {
+        $this->street = $street;
+    }
+
+    public function getUser()
+    {
+        return $this->user;
+    }
+
+    public function setUser(User $user)
+    {
+        if ($this->user !== $user) {
+            $this->user = $user;
+            $user->setAddress($this);
+        }
+    }
+}
\ No newline at end of file
diff --git a/tests/Doctrine/Tests/Models/DDC2372/DDC2372User.php b/tests/Doctrine/Tests/Models/DDC2372/DDC2372User.php
new file mode 100644
index 000000000..4df0df6a5
--- /dev/null
+++ b/tests/Doctrine/Tests/Models/DDC2372/DDC2372User.php
@@ -0,0 +1,34 @@
+<?php
+
+namespace Doctrine\Tests\Models\DDC2372;
+
+use Doctrine\Tests\Models\DDC2372\Traits\DDC2372AddressTrait;
+
+/** @Entity @Table(name="users") */
+class DDC2372User
+{
+    use DDC2372AddressTrait;
+
+    /**
+     * @Id @Column(type="integer")
+     * @GeneratedValue(strategy="AUTO")
+     */
+    private $id;
+    /** @Column(type="string", length=50) */
+    private $name;
+
+    public function getId()
+    {
+        return $this->id;
+    }
+
+    public function getName()
+    {
+        return $this->name;
+    }
+
+    public function setName($name)
+    {
+        $this->name = $name;
+    }
+}
\ No newline at end of file
diff --git a/tests/Doctrine/Tests/Models/DDC2372/Traits/DDC2372AddressTrait.php b/tests/Doctrine/Tests/Models/DDC2372/Traits/DDC2372AddressTrait.php
new file mode 100644
index 000000000..66ca17446
--- /dev/null
+++ b/tests/Doctrine/Tests/Models/DDC2372/Traits/DDC2372AddressTrait.php
@@ -0,0 +1,25 @@
+<?php
+
+namespace Doctrine\Tests\Models\DDC2372\Traits;
+
+trait DDC2372AddressTrait
+{
+    /**
+     * @OneToOne(targetEntity="Doctrine\Tests\Models\DDC2372\DDC2372Address", inversedBy="user")
+     * @JoinColumn(name="address_id", referencedColumnName="id")
+     */
+    private $address;
+
+    public function getAddress()
+    {
+        return $this->address;
+    }
+
+    public function setAddress(Address $address)
+    {
+        if ($this->address !== $address) {
+            $this->address = $address;
+            $address->setUser($this);
+        }
+    }
+}
\ No newline at end of file
diff --git a/tests/Doctrine/Tests/ORM/Tools/EntityGeneratorTest.php b/tests/Doctrine/Tests/ORM/Tools/EntityGeneratorTest.php
index d8dfa1b56..b49125cdc 100644
--- a/tests/Doctrine/Tests/ORM/Tools/EntityGeneratorTest.php
+++ b/tests/Doctrine/Tests/ORM/Tools/EntityGeneratorTest.php
@@ -2,10 +2,12 @@
 
 namespace Doctrine\Tests\ORM\Tools;
 
-use Doctrine\ORM\Tools\SchemaTool,
-    Doctrine\ORM\Tools\EntityGenerator,
-    Doctrine\ORM\Tools\Export\ClassMetadataExporter,
-    Doctrine\ORM\Mapping\ClassMetadataInfo;
+use Doctrine\ORM\Tools\SchemaTool;
+use Doctrine\ORM\Tools\EntityGenerator;
+use Doctrine\ORM\Tools\Export\ClassMetadataExporter;
+use Doctrine\ORM\Mapping\ClassMetadataInfo;
+use Doctrine\ORM\Mapping\ClassMetadataFactory;
+use Doctrine\Tests\Models\DDC2372\DDC2372User;
 
 require_once __DIR__ . '/../../TestInit.php';
 
@@ -285,7 +287,7 @@ class EntityGeneratorTest extends \Doctrine\Tests\OrmTestCase
 
         $filename = $this->_tmpDir . DIRECTORY_SEPARATOR
                   . $this->_namespace . DIRECTORY_SEPARATOR . 'DDC1784Entity.php';
-        
+
         $this->assertFileExists($filename);
         require_once $filename;
 
@@ -333,7 +335,7 @@ class EntityGeneratorTest extends \Doctrine\Tests\OrmTestCase
 
         $property   = new \ReflectionProperty($metadata->name, 'centroCustos');
         $docComment = $property->getDocComment();
-        
+
         //joinColumns
         $this->assertContains('@JoinColumn(name="idorcamento", referencedColumnName="idorcamento"),', $docComment);
         $this->assertContains('@JoinColumn(name="idunidade", referencedColumnName="idunidade")', $docComment);
@@ -439,7 +441,7 @@ class EntityGeneratorTest extends \Doctrine\Tests\OrmTestCase
 
         $entity     = new $metadata->name;
         $reflClass  = new \ReflectionClass($metadata->name);
-        
+
         $type   = $field['phpType'];
         $name   = $field['fieldName'];
         $value  = $field['value'];
@@ -454,6 +456,36 @@ class EntityGeneratorTest extends \Doctrine\Tests\OrmTestCase
         $this->assertEquals($value, $entity->{$getter}());
     }
 
+    /**
+     * @group DDC-2372
+     */
+    public function testTraitPropertiesAndMethodsAreNotDuplicated()
+    {
+        if (PHP_VERSION_ID < 50400) {
+            $this->markTestSkipped('Traits are not available before php 5.4.');
+        }
+
+        $cmf = new ClassMetadataFactory();
+        $em = $this->_getTestEntityManager();
+        $cmf->setEntityManager($em);
+
+        $user = new DDC2372User();
+        $metadata = $cmf->getMetadataFor(get_class($user));
+        $metadata->name = $this->_namespace . "\DDC2372User";
+        $metadata->namespace = $this->_namespace;
+
+        $this->_generator->writeEntityClass($metadata, $this->_tmpDir);
+
+        $this->assertFileExists($this->_tmpDir . "/" . $this->_namespace . "/DDC2372User.php");
+        require $this->_tmpDir . "/" . $this->_namespace . "/DDC2372User.php";
+
+        $reflClass = new \ReflectionClass($metadata->name);
+
+        $this->assertSame($reflClass->hasProperty('address'), false);
+        $this->assertSame($reflClass->hasMethod('setAddress'), false);
+        $this->assertSame($reflClass->hasMethod('getAddress'), false);
+    }
+
     /**
      * @return array
      */
@@ -473,43 +505,43 @@ class EntityGeneratorTest extends \Doctrine\Tests\OrmTestCase
                 'value' => new \DateTime
             )),
             array(array(
-                'fieldName' => 'date', 
+                'fieldName' => 'date',
                 'phpType' => '\\DateTime',
                 'dbType' => 'date',
                 'value' => new \DateTime
             )),
             array(array(
-                'fieldName' => 'time', 
+                'fieldName' => 'time',
                 'phpType' => '\DateTime',
                 'dbType' => 'time',
                 'value' => new \DateTime
             )),
             array(array(
-                'fieldName' => 'object', 
+                'fieldName' => 'object',
                 'phpType' => '\stdClass',
                 'dbType' => 'object',
                 'value' => new \stdClass()
             )),
             array(array(
-                'fieldName' => 'bigint', 
+                'fieldName' => 'bigint',
                 'phpType' => 'integer',
                 'dbType' => 'bigint',
                 'value' => 11
             )),
             array(array(
-                'fieldName' => 'smallint', 
+                'fieldName' => 'smallint',
                 'phpType' => 'integer',
                 'dbType' => 'smallint',
                 'value' => 22
             )),
             array(array(
-                'fieldName' => 'text', 
+                'fieldName' => 'text',
                 'phpType' => 'string',
                 'dbType' => 'text',
                 'value' => 'text'
             )),
             array(array(
-                'fieldName' => 'blob', 
+                'fieldName' => 'blob',
                 'phpType' => 'string',
                 'dbType' => 'blob',
                 'value' => 'blob'