diff --git a/app/Models/PatientModel.php b/app/Models/PatientModel.php
index 7f25bff..2f78ef6 100644
--- a/app/Models/PatientModel.php
+++ b/app/Models/PatientModel.php
@@ -3,6 +3,7 @@
 namespace App\Models;
 
 use CodeIgniter\Model;
+use CodeIgniter\Database\RawSql;
 
 class PatientModel extends Model {
   protected $table      = 'patient';