diff --git a/app/Controllers/ClientController.php b/app/Controllers/ClientController.php
index 678100a..ea65bca 100755
--- a/app/Controllers/ClientController.php
+++ b/app/Controllers/ClientController.php
@@ -133,6 +133,9 @@ class ClientController extends AdminController
         $field = $this->request->getPost('field');
         $value = $this->request->getPost('value');
 
+        if($value == '')
+        return $this->response->setJSON(['isDuplicate' => false]);
+
         // Load the database if not already loaded
         $db = db_connect();