diff --git a/modules/entities/lang/en.php b/modules/entities/lang/en.php
index 0044daa51970110d7a7b58a4e9118907cdf045b4..6e706136d0fd3e47b200c19bf4b46a69712f213a 100755
--- a/modules/entities/lang/en.php
+++ b/modules/entities/lang/en.php
@@ -89,6 +89,9 @@ if (!defined('_ENTITY_IS_RELATED')) {
 if (!defined('_TYPE')) {
     define('_TYPE', 'Type');
 }
+if (!defined('_ENTITY_ALREADY_EXISTS')) {
+    define('_ENTITY_ALREADY_EXISTS', 'Entity already exists');
+}
 
 /*************************** Users - Entites management *****************/
 if (!defined('_ENTITY_USER_DESC')) {
diff --git a/modules/entities/lang/fr.php b/modules/entities/lang/fr.php
index cd61a35f2d2eb613842df98c1fb163b692567046..0c8cb9cbc270aedb0cd923ffde5bc3b9cb95fc5e 100755
--- a/modules/entities/lang/fr.php
+++ b/modules/entities/lang/fr.php
@@ -89,6 +89,9 @@ if (!defined('_ENTITY_IS_RELATED')) {
 if (!defined('_TYPE')) {
     define('_TYPE', 'Type');
 }
+if (!defined('_ENTITY_ALREADY_EXISTS')) {
+    define('_ENTITY_ALREADY_EXISTS', 'Cette entité existe déjà');
+}
 
 /*************************** Users - Entites management *****************/
 if (!defined('_ENTITY_USER_DESC')) {
diff --git a/src/app/entity/controllers/EntityController.php b/src/app/entity/controllers/EntityController.php
index e05b4ca0088ef59e85f005cff82ca537a13279cc..d62ee942331a5bc2e97dbfef394c91d93b2a0b64 100644
--- a/src/app/entity/controllers/EntityController.php
+++ b/src/app/entity/controllers/EntityController.php
@@ -171,7 +171,7 @@ class EntityController
 
         $existingEntity = EntityModel::getById(['entityId' => $data['entity_id'], 'select' => [1]]);
         if (!empty($existingEntity)) {
-            return $response->withStatus(400)->withJson(['errors' => 'Entity already exists']);
+            return $response->withStatus(400)->withJson(['errors' => _ENTITY_ALREADY_EXISTS]);
         }
 
         EntityModel::create($data);