diff --git a/src/Chamilo/UserBundle/Entity/User.php b/src/Chamilo/UserBundle/Entity/User.php
index b910963181..5e3489e5e2 100644
--- a/src/Chamilo/UserBundle/Entity/User.php
+++ b/src/Chamilo/UserBundle/Entity/User.php
@@ -85,7 +85,7 @@ class User implements UserInterface //implements ParticipantInterface, ThemeUser
 
     /**
      * @var string
-     * @ORM\Column(name="email_canonical", type="string", length=100, nullable=false, unique=true)
+     * @ORM\Column(name="email_canonical", type="string", length=100, nullable=false, unique=false)
      */
     protected $emailCanonical;