diff --git a/tests/Doctrine/Tests/Models/DDC6613/Phone.php b/tests/Doctrine/Tests/Models/DDC6613/Phone.php
index 32f878eee..9ce090960 100644
--- a/tests/Doctrine/Tests/Models/DDC6613/Phone.php
+++ b/tests/Doctrine/Tests/Models/DDC6613/Phone.php
@@ -10,7 +10,6 @@ namespace Doctrine\Tests\Models\DDC6613;
 
 
 /**
- * @Entity(readOnly=true)
  * @Table(name="ddc6613_phone")
  */
 
@@ -19,9 +18,13 @@ class Phone
 
     /**
      * @Id
-     * @GeneratedValue
+     * @GeneratedValue(strategy="NONE")
      * @Column(type="integer")
      */
     public $id;
 
+    public function __construct()
+    {
+        $this->id = uniqid('phone', true);
+    }
 }
\ No newline at end of file
diff --git a/tests/Doctrine/Tests/Models/DDC6613/User.php b/tests/Doctrine/Tests/Models/DDC6613/User.php
index ee4e7260b..6b233c0a2 100644
--- a/tests/Doctrine/Tests/Models/DDC6613/User.php
+++ b/tests/Doctrine/Tests/Models/DDC6613/User.php
@@ -20,10 +20,10 @@ class User
 
     /**
      * @Id
-     * @GeneratedValue
-     * @Column(type="integer")
+     * @GeneratedValue(strategy="NONE")
+     * @Column(type="string")
      */
-    public $id;
+    private $id;
 
 
     /**
@@ -36,6 +36,7 @@ class User
      */
     public function __construct()
     {
+        $this->id     = uniqid('user', true);
         $this->phones = new ArrayCollection();
     }