diff --git a/src/Entity/CustomerVehicle.php b/src/Entity/CustomerVehicle.php
index dc195b8a..247db69d 100644
--- a/src/Entity/CustomerVehicle.php
+++ b/src/Entity/CustomerVehicle.php
@@ -156,6 +156,7 @@ class CustomerVehicle
 
     public function setPlateNumber($plate_number)
     {
+        $plate_number = strtoupper($plate_number);
         $this->plate_number = $plate_number;
         return $this;
     }