diff --git a/src/Bundle/ChillMainBundle/Entity/LocationType.php b/src/Bundle/ChillMainBundle/Entity/LocationType.php
index d3dff58b7..9385620cd 100644
--- a/src/Bundle/ChillMainBundle/Entity/LocationType.php
+++ b/src/Bundle/ChillMainBundle/Entity/LocationType.php
@@ -11,6 +11,7 @@ namespace Chill\MainBundle\Entity;
 
 use Chill\MainBundle\Repository\LocationTypeRepository;
 use Doctrine\ORM\Mapping as ORM;
+use Symfony\Bridge\Doctrine\Validator\Constraints\UniqueEntity;
 use Symfony\Component\Serializer\Annotation as Serializer;
 use Symfony\Component\Serializer\Annotation\DiscriminatorMap;
 
@@ -20,6 +21,7 @@ use Symfony\Component\Serializer\Annotation\DiscriminatorMap;
  * @DiscriminatorMap(typeProperty="type", mapping={
  *     "location-type": LocationType::class
  * })
+ * @UniqueEntity({"defaultFor"})
  */
 class LocationType
 {